The sounds

Mixer tab → Sounds pane

How many sounds? Luzeed has forty-three, grouped by category: noise, rhythm, water, nature, machines, piano, meditation, and binaural.

Eighteen are computed by your phone the moment you turn them on. They don’t exist in any file; the app generates them. That’s why they work offline, in airplane mode, and on first launch, without a single byte downloaded.

Twenty-five are recordings that come with the app (nature, piano, and meditation). They’re already on your phone too, so there’s nothing to download.

Why are there two rains? “Rain” is computed and “Gentle rain” is a recording. The app generates the computed one; the recorded one has the texture of a real downpour. They sit side by side in the list so you can compare them.

Every sound has its own card with its own picture. The ▶ button lets you listen for ten seconds without adding the sound, and then it goes quiet. The switch adds it to your mix. The ⋮ menu tells you whether it’s computed or recorded, and it holds the sound’s settings: clarity and tempo.

The chips at the top (All, Noise, Water, Nature, Focus, and Music) jump to that group, and tapping one doesn’t hide anything: a sound that’s on always stays in the list, so just scroll to find it.

Building an atmosphere

Mixer tab → Sounds pane → Save (top right)

In the Mixer tab, open the Sounds pane. Turn on as many sounds as you like (they all play together), and use each one’s slider to set its volume.

Computed sounds have a clarity setting: under the slider, choose Dark, Neutral, or Bright. It’s the same sound at the same volume, just more muffled or brighter, and switching crossfades from one to the other over two seconds. Clarity is saved with the atmosphere, and it can also follow the daylight. Recordings, binaural beats, and the soft footstep don’t have it: a recording has only one rendering, a binaural beat is made of two pure tones, and the soft footstep sits entirely in the low end, where clarity has no effect.

When you like the mix, tap Save at the top right. Give it a name and, if you want, a timer. “My night, 45 minutes” then starts again with one tap, sound and timer included.

Luzeed comes with only three ready-made atmospheres, and they evolve: Relax, Focus, and Move. For everything else, with forty-three sounds to choose from, yours will beat ours.

Clarity that follows the daylight

Mixer tab → a computed sound that’s on → its ⋮ menu → Follow the daylight

Under a computed sound’s clarity setting, the Follow the daylight switch lets the daylight choose for you: dark at night, neutral when the sun is low, and bright when it’s high. The three buttons gray out, the one in use stays highlighted, and a line tells you why, for example: “Bright: the sun is high.”

It changes slowly. When the light changes (the sun goes down, a shower rolls in), the clarity shifts over thirty seconds so you don’t hear it happen. Picking a clarity yourself puts you back in control.

It needs to know where the sun is. The first time, the app asks for your approximate location, never your precise one. It’s read only while the app is open, and it’s rounded to about ten kilometers. The sun’s position is calculated on your phone. If you don’t allow location, it still works: the clarity follows the sun in your time zone’s city, give or take a few minutes, and the line tells you so.

The weather, if you want it. A second switch, Use the weather, makes the clarity neutral under an overcast sky and dark when it rains. It’s off by default, because once it’s on, your rounded location is sent to MET Norway through our server, at most once an hour and only during the day. What’s sent, and to whom, is explained in the privacy policy. Weather data: MET Norway.

“Follow the daylight” is saved with the atmosphere as “Auto”: an atmosphere you replay at night starts out dark. Your location isn’t saved anywhere.

Finding and editing your atmospheres

Mixer tab → My atmospheres pane → an atmosphere’s ⋮ menu

In the Mixer tab, open the My atmospheres pane. Tap an atmosphere to play it. The ⋮ menu on the right lets you add it to your favorites, rename it, change the timer, or delete it.

Your latest atmosphere also appears in the large card on the Home tab, so you can replay it without going through the mixer.

Only deleting asks you to confirm. A name can be fixed and a timer changed, but a deleted atmosphere is gone for good, along with all of its volume settings.

Timer and fade-out

Mixer tab → the player at the bottom (once a sound is playing) → the timer icon

As soon as a sound starts playing, a player appears at the bottom of the mixer. Its timer icon stops the sound after the amount of time you choose. There are six preset lengths, and “Custom…” opens a picker wheel if you want exactly twenty minutes, or six hours.

Fade out, in the same sheet, controls how the sound ends: anywhere from five seconds to five minutes. An abrupt stop wakes you up. That’s why the fade exists, and why it has its own setting.

The alarm

Sleep tab → tap the time to change it, and the switch to turn the alarm on

In the Sleep tab, tap the time to change it, and tap the switch to turn the alarm on.

Sleep comes in cycles of about 90 minutes. Waking up in the middle of a cycle leaves you groggy even after eight hours; waking up at the end of one leaves you refreshed even after six. That’s why Luzeed builds its suggestions out of whole cycles.

Target duration sets how many cycles you want to sleep, and the app works out when you should go to bed: anywhere from 3 cycles (4.5 hours, a long nap) to 7 (10.5 hours, a night of catch-up sleep). Or pick your night works the other way around: if you fall asleep now, it shows you good times to wake up.

I fall asleep in, just below, is the one setting here that depends on something only you know. If it takes you forty-five minutes to fall asleep and the app assumes fifteen, your bedtime is off by half an hour, every single night. Tap “+” and watch the bedtime above move earlier.

This setting doesn’t move your alarm. It moves your bedtime: you go to bed earlier so you sleep just as long and still get up at the same time.

Your wake window, the card at the bottom of the tab, lets the alarm ring earlier (by up to 15, 30, or 45 minutes) so it lands at the end of a cycle. It’s off by default.

It isn’t worked out on the evening you set your alarm, because at that point nobody knows when you’ll fall asleep. It’s worked out when you put your phone down. The app then knows your bedtime, looks for the end of a cycle that falls within the window you allowed, and moves the alarm there.

⚠️ Most nights, it won’t do anything, and that’s normal. Cycles last 90 minutes. A 15-minute window catches the end of one one night in six; 30 minutes, one night in three; 45 minutes, one night in two. The rest of the time, no cycle ends inside the window, and the alarm rings at the time you set.
That’s why you’ll rarely see the 15-minute window do anything. To try the setting, use 45.

Never later than the time you set. That time stays a hard limit, whether it’s for a train or a meeting. The flexibility only goes one way. And if no cycle ends within the window, the alarm rings at the time you set, unchanged.

⚠️ Nothing is measured. The app doesn’t know whether you’re in deep sleep at 6:42. No phone can tell that in real time. The app calculates when your cycles end based on the time you put your phone down. It’s an estimate, like everything else on this page.

On iPhone, the alarm rings even when the app is closed and the phone is locked. Luzeed uses AlarmKit, the real system alarm in iOS 26, which is the same one the iPhone’s Clock app uses. It overrides silent mode.

Gradual wake-up

Sleep tab → Gradual wake-up (on by default)

The sound gets louder over the last thirty minutes before your alarm time, instead of starting all at once.

If nothing is playing by then (say, the sleep timer turned the sound off hours earlier), the app starts a very soft background sound on its own so the volume has something to build on.

Anti-snooze, and two other ways to stop the alarm

Sleep tab → To stop it

There are three ways, and the first one is the default.

One tap. A full-width button, with nothing else required.

A math problem. A two-digit addition or multiplication. You can tap a button with your eyes closed; reading, understanding, and typing are three steps that actually wake you up.

Movement. A figure on screen does squats or push-ups, a counter goes up, and you follow along. You choose anywhere from five to twenty reps. Once you reach the count, an “I’m done” button appears. That button, and nothing else, turns off the alarm. The counter alone doesn’t stop it; otherwise, you could just wait without moving.

You can adjust the pace during the exercise with two buttons under the figure. The 18th push-up doesn’t go as fast as the 3rd, and nobody can predict the night before how out of breath they’ll be. The count doesn’t start over, and the pace is remembered for next time. Push-ups start out slower than squats.

The app doesn’t count your movements. It sets the pace and trusts you. It doesn’t read any sensor, accelerometer or otherwise. Counting for real would require a sensor, and a failure mode nobody wants: getting stuck because the ninth rep wasn’t recognized.

This isn’t a workout program, and there are always two ways out. “I cannot” turns off the alarm unconditionally, from the very first second, because the app knows nothing about your body. And after two minutes, everything stops on its own. Something you can’t interrupt is a safety problem, not motivation.

Repeat days

Sleep tab → the seven days, below the time

The seven dots show which days the alarm rings. On a new install, all seven are selected, so it rings every day.

Deselect any days you like, for example to keep just Monday through Friday if your Saturdays are your own. And if you deselect all of them, the alarm rings just once and then turns itself off.

Bedtime reminder

Sleep tab → Bedtime reminder (off by default)

It’s off by default. Once you turn it on, you get a notification at the time you should go to bed to sleep your target duration before your alarm.

This reminder won’t wake anyone up. It’s an ordinary notification, so it doesn’t break through silent mode or Do Not Disturb. Someone who silences their phone at 11 p.m. is asking to be left alone, and a piece of advice isn’t an emergency.

The night log

Discover tab → Your nights → Sleep analysis

You’ll find it under Your nights, in the Discover tab. It records two moments: when you put your phone down while an alarm is set, and when you turn off the alarm. The time in between is the duration it shows.

It’s an estimate, not a measurement, and it says so right under the log. Luzeed doesn’t know whether you were asleep; it only knows when you put your phone down. That’s why there’s no score out of 100: a score would make a guess look like a measurement.

Quick tests that last only a few minutes are left out: a “night” has to last between two and fourteen hours to count.

This log never leaves your phone. It isn’t synced, even if you have an account.

Apple Health and Health Connect

Discover tab → Measured sleep

With Use Apple Health on iPhone or Use Health Connect on Android, Luzeed reads the nights that your watch or a sleep app has already measured. Those nights then replace the estimate with a real measurement.

Luzeed never writes anything to Health or Health Connect. Its own log is an estimate, and adding it there would make it look like a measurement that other apps would then read as fact.

On Android, you need Health Connect. Since Android 14, it’s built into the phone. On earlier versions, it’s a free app from Google, and the card offers to open the Play Store if it’s missing. If you said no, you can be asked again from the card, and you can revoke access in Health Connect, under app permissions.

On Android, “No measured nights” means access is granted and nothing was recorded in the last thirty days. On iPhone, the screen can’t tell the difference (iOS never says whether read access was granted), so it lists both possibilities.

What your night was made of. If your watch records sleep stages (deep, REM, and light), Luzeed shows them under your nights, with how long each one lasted, its share of the night, and the usual range for adults alongside it.

There’s no score out of 100, and that’s not an oversight. A score would mean deciding how much an hour of deep sleep is worth compared with an hour of REM, and nobody has measured those weights. We’d be making them up. The breakdown, on the other hand, is measured, and it shows what a score would hide: what was missing.

The ranges are population benchmarks. One night outside them doesn’t mean anything on its own, which is why the screen says “usually” and never “normal.” Luzeed doesn’t diagnose anything.

Without recorded stages (for example, from an app that only logs when you fell asleep and when you woke up), you see your nights but not their breakdown. In that case, the app shows nothing rather than zeros, which would read as “you got no deep sleep.”

Binaural beats

Mixer tab → Sounds pane → Focus chip, Binaural (headphones) section

A binaural beat is two slightly different frequencies, one in each ear. Your auditory system compares what reaches each side and hears a pulse at the difference between them: 200 Hz on the left and 206 Hz on the right are heard as a 6 Hz beat.

You need headphones. Without them, the two frequencies mix in the air before they reach your ears, and all that’s left is a hum.

Luzeed names them by their frequency (“Binaural · 6 Hz”) and doesn’t promise any effect. Studies on brainwave entrainment are few, and they contradict each other. We can’t claim it works, so we don’t.

Relax

Home tab → For you tonight → Relax

Relax plays a mix that changes on its own during the session, along with a video that matches the time of day: a waterfall in the forest in the morning, the beach during the day, a fire in the evening, and the ocean at night. The mix follows your day too: forest and waterfall in the morning, the shore and then rain during the day, fire and rain in the evening, and rain and ocean at night. It shifts so slowly that you never hear it move.

The video opens in an arched window. Above it, an arc traces your day since you woke up (morning, daytime, evening, and night), with the sun or the moon at the time you’re in.

Choose a length (10, 20, or 30 minutes, or Custom to enter your own), then tap Start. The video opens full screen and loops until the session ends. The time remaining, Pause, and Quit fade away after a few seconds; tap the screen to bring them back. Pausing stops the video, the sound, and the countdown together.

When the session ends, the sound fades out completely, the video freezes on a single frame, and Session complete lets you Play again for the same length or Leave Relax. Nothing starts again on its own.

The time of day is counted from when you wake up, not from midnight. Luzeed uses your alarm time if the alarm is on that day; if not, your usual wake-up time based on the most recent nights in the log; and if not, the clock alone, as if you woke up at 7 a.m. The screen tells you which one it used. Light or dark mode makes no difference: the time is what picks the video. If a session crosses from one part of the day into the next, it glides from one mix to the other over an hour, and from one video to the next. None of this requires a permission, and nothing leaves your phone.

Without a subscription, a session lasts ten minutes. You get the whole mode; only the length is limited. Twenty minutes, thirty minutes, and a length of your choice come with the subscription. A session that has started always plays to the end: nothing cuts the sound off partway through, even if a trial ends while it’s playing.

That’s the difference from a saved atmosphere: an atmosphere always plays the same mix, while Relax keeps changing its own. The mixer can’t do that, which is why this mode exists.

Locking your phone doesn’t stop the session: the sound keeps playing, and the video picks up again when you come back. Quit (or the back gesture) ends it. The videos are silent, and all seven of Relax’s sounds are recordings, so it sounds the same with or without a subscription.

Luzeed doesn’t promise any effect. It’s an evolving soundscape with scenery to match, not a treatment, and nothing about the session is recorded.

Focus

Home tab → For you tonight → Focus

Focus is a backdrop for working, in sound and picture: lo-fi brown noise, rain or a waterfall, and a soft beat, along with a video that matches the time of day (particles or spirals). Unlike Relax, the sound stays the same during the session, because a backdrop for work shouldn’t drift off partway through. What changes it is the time of your day: the waterfall in the morning, rain during the day, the liveliest mix in the afternoon dip, rain in the evening, and no beat at all at night. The same arc traces your day above the video, with the afternoon dip shown in gold.

Choose a length (10, 20, or 30 minutes, or Custom to enter your own), then tap Start. As with Relax, the video opens full screen and loops until the end. The time remaining, Pause, and Quit fade away after a few seconds; tap the screen to bring them back. Pausing stops the video, the sound, and the countdown together. When the session ends, Session complete lets you Play again or Leave Focus, and nothing starts again on its own.

The afternoon dip comes 7 to 9 hours after you wake up (2 to 4 p.m. if you get up at 7 a.m.), and it has a video of its own. Your wake-up time is worked out the same way as for Relax: your alarm if it’s on that day, otherwise your recent nights, otherwise the clock alone, and the screen tells you which. Light or dark mode makes no difference. A session that runs into the dip glides into it over an hour, and from one video to the next. Nothing measures how alert you are: the app counts the hours since you woke up, and nothing more.

Without a subscription, a session lasts ten minutes, just like Relax; twenty minutes, thirty minutes, and a length of your choice come with the subscription. The videos are silent and all of its sounds are recordings, so Focus sounds the same with or without a subscription.

Locking your phone doesn’t stop the session: the sound keeps playing, and the video picks up again when you come back. Quit (or the back gesture) ends it.

Luzeed doesn’t promise any effect. Focus is a backdrop, not a method, and nothing about the session is recorded.

Move

Home tab → For you tonight → Move

Set your goal (thirty minutes, an hour, an hour and a half, or Custom for any length from five minutes to four hours, in five-minute steps), then tap Start my walk. Walk or run: Luzeed measures distance, pace, steps, and calories while a soft footstep, over a backdrop of forest and wind, keeps time with your cadence, anywhere between 60 and 140 per minute.

During the walk, the screen shows the time left until your goal, your progress, your four current measurements, the rhythm of the sound, and a small circle that pulses to its tempo. Pause suspends everything (the sound, the timer, and the measuring); Finish ends the walk. At the end, whether you reached your goal or tapped Finish, you get a report: duration, distance, average pace, steps, cadence, calories, and your route drawing itself on the screen. It’s already saved in your history.

Location is requested when you open Move. It’s used to measure distance and pace, and to draw your route. It’s read only between the start and the end of a walk, including while the screen is locked, and your phone makes that visible: the blue indicator on iPhone, or a “Walk in progress” notification on Android. Without it, you can still walk, just with no distance, no pace, and no route.

Your steps come from your phone’s sensor, which the app asks for on your first walk (“Motion & Fitness” on iPhone, “Physical activity” on Android). The soft footstep follows your cadence over the last minute. Until then, it beats at a hundred per minute, and the screen says “Default rhythm.” Without the sensor, you can still walk, but your steps aren’t counted.

Calories are an estimate, calculated on your phone from your speed and your weight. Your weight is asked for once; it’s optional, and you can change it under the goal. Without a weight, no calories are shown, rather than a made-up number.

The app draws your route itself, with no online map: its shape, where it started and finished, a scale, and north. No mapping service sees where you walked.

History, at the top of the screen, lists your walks, most recent first, each with its report. You can erase one, or erase them all. They stay on this phone, routes included: nothing goes to our servers or into your account. Walks shorter than a minute aren’t saved.

Move is part of the subscription, all of it: its soft footstep is a computed sound, like the rain or the colored noises.

During a walk, the back gesture doesn’t stop anything: the sound and the measuring keep going, and the Move screen offers Back to my walk. The soft footstep is also in the mixer, in the “Rhythm” section. There, “Follow my steps” reads your steps from Apple Health or Health Connect once a minute.

Luzeed doesn’t promise any effect. Move measures and keeps you company. It doesn’t judge, and it doesn’t tell you what a walk will do for you.

Guided breathing

Discover tab → Breathing, or Home → Quick actions

You get a circle and three rhythms. The circle grows as you breathe in, holds still while you hold your breath, and shrinks as you breathe out. The number in the middle counts down the current phase.

Long exhale (4-7-8): breathe in for four seconds, hold for seven, and breathe out for eight. It’s the most demanding, at nineteen seconds per cycle.
Even rhythm (5-5): five in and five out, with no hold. It’s the easiest to keep up for a long time, and the one to start with.
Four counts (4-4-4-4): four equal counts, with an extra pause after you breathe out.

A set length, if you want one. By default, the exercise doesn’t end: it keeps going until you tap Stop. Choose 3, 5, or 10 minutes and the session stops on its own, so you can keep your eyes closed the whole time.

A voice calls out each phase (“Breathe in,” “Hold,” “Breathe out”), a vibration marks it, and three vibrations mark the end. It’s designed to be used with your eyes closed: without a cue you don’t have to see, you’d need to watch the screen to know when to switch, which defeats the purpose. These vibrations follow your phone’s haptics setting: if haptics are off there, they’re off here too.

The screen stays on during the session so your phone doesn’t lock halfway through. It goes back to its usual auto-lock time as soon as the session stops, whether it finishes or you leave the screen.

Whatever you’re playing keeps playing during the exercise, because breathing doesn’t touch the mixer. If you switch rhythms partway through, the new one starts from the beginning, without resetting the length.

Nothing is recorded, and Luzeed doesn’t promise any effect. The cycle count disappears when you leave the screen: keeping a history of sessions would turn it into health data, with the legal basis and the disclosures that come with it. These are rhythms to follow, not a treatment.

Guided meditation

Discover tab → Guided meditation

There are three attention practices, each guided one cue at a time. The breath: coming back to your breath, again and again. The body: moving through it from your feet to your head. Sounds: listening to what’s around you without holding on to anything. You choose 5, 10, or 15 minutes, and the cues are spread out over that time.

A voice reads each cue as it comes up, and the cue appears on screen at the same time, so you can close your eyes from the start. One vibration signals the next cue, and three signal the end. Your phone’s built-in synthetic voice isn’t used: a cue you follow with your eyes closed needs a voice you actually want to listen to.

Where the voice comes from. It’s a synthetic voice (one of Google’s), chosen by ear and recorded in advance: it ships with the app, just like the sounds. Nothing is sent over the internet when it speaks. It’s available in French, English, German, Spanish, and Italian, but not yet in Portuguese. To read the cues without it, go to Me → Read aloud.

The screen stays on during the session, as it does for breathing, and the vibrations follow the same haptics setting on your phone. Whatever you’re playing keeps playing, because meditation doesn’t touch the mixer. To meditate to the sound of rain, start the rain first.

Nothing is recorded, and Luzeed doesn’t promise any effect: no history, no streaks, no running total of minutes. The cues tell you where to put your attention, never what it will do for you.

Snoring detection

Me tab → Detect snoring, or the Snoring card in Discover → Your nights

It’s off by default. Until you turn it on, the app doesn’t touch the microphone and doesn’t ask you for any permission. You can turn it on in two places, and both show the same sentence explaining what the microphone does.

No sound is recorded. The microphone produces a stream, that stream is reduced to two numbers (the sound level and how much of it is low-pitched, ten times a second), and then it’s discarded. There’s no audio file, so there’s nothing to play back and nothing to delete. For the most recent night, the app keeps three numbers per episode: start time, end time, and number of breaths. For the nights before that, only the end time and the total remain, just enough to draw the last seven days; any older night is erased as soon as the app opens.

Your week, in bars. Once two nights have been listened to, the card shows the last seven days: a bar for the time spent snoring, a dot for a night when the app listened but heard nothing, and a faint dash for an evening with no listening. The day of the most recent night is filled in. Bar heights are compared with your own week, never with a norm.

Each evening, tap “Listen tonight.” It’s on the Snoring card and in the bedtime reminder notification. You have to do this with the app open: neither Android nor iOS lets an app turn on the microphone once the screen is off. After that, listening continues all night with the screen off, and it stops on its own at your alarm time, or after twelve hours at most if no alarm is set. On Android, a notification shows while it’s running; on iPhone, the system’s orange dot does.

Counting waits for silence. A phone playing an atmosphere would completely drown out a snore, and the microphone would hear only the app. While any sound from the app is playing, alarm included, whatever the microphone picks up is thrown away without being measured. Counting starts when the sleep timer fades out the mix. If a sound starts again in the middle of the night, counting stops and keeps nothing; the next silence starts it again from zero.

What it can’t do. It can’t tell who is snoring: a microphone on a nightstand hears both sides of the bed. And it can’t tell a snore from other regular noises. A movie with explosions a few seconds apart, or someone talking in their sleep, could be counted. What it looks for is a plausible breathing rhythm, not a signature.

It doesn’t say anything medical. No severity, no index, and above all nothing about apnea: a pause in breathing can’t be measured with a phone microphone a meter away.

You can stop it at any time from the Snoring card. A session stopped before two hours of counting isn’t kept: it would replace the previous night and count as a night in the week.

The five features that need a connection

Discover tab, and the Mixer tab for mood

Almost everything in Luzeed works offline. Five features are the exception, and they use a language model: a comment on a dream, an atmosphere suggested from your mood, a summary of a night of snoring, a reading of your nights, and questions to the coach.

Nothing is sent on its own. Each one has a button, and nothing is sent until you tap it. None of the five is triggered when you wake up, when you open a screen, or when a new night comes in.

Exactly what’s sent is spelled out in the privacy policy, feature by feature. In short: times, durations, and numbers. Never a sound, never a location, and never your name. A dream’s text is sent only if you ask for a comment on that particular dream.

What the model isn’t allowed to write. Its instructions forbid it to make up sleep stages, claim that a cycle is complete, give a score, or use medical vocabulary. And its answer is checked before you see it: a single medical word gets the whole answer thrown out rather than edited.

There’s a limit. Each task has its own maximum number of requests per day, with an overall cap on top of that. When the limit is reached, the screen tells you instead of spinning forever.

And then there’s the weather, which involves no model. If you turn it on under Follow the daylight, your rounded location is sent to MET Norway through our server, at most once an hour and only during the day. It never goes to the language model. Without a connection, nothing breaks: the clarity simply follows the sun.

The morning summary

Discover tab → Your nights → Snoring card → Ask for the morning summary

When a night has been listened to, a button offers to turn it into a readable sentence, like “you snored a little before 2 a.m.,” instead of three columns of numbers.

What’s sent: the start and end times of each episode, how long each one lasted, the number of breaths, and the total for the night. Not the date, which wouldn’t tell the model anything. And no sound, since none exists.

You have to ask for it; it’s never automatic. A request every morning would mean sending data nobody asked to send, and it would use up the daily limit on a text nobody reads. The summary isn’t tied to a time of day: if you get up at 6 a.m. and look at 1 p.m., you get the same text.

It’s discarded along with its night. As soon as a new night comes in, the previous summary disappears. A summary that stuck around could say “nothing was heard” above fifty minutes of snoring episodes, with nothing to show that it was about the night before.

An atmosphere based on your mood

Mixer tab → Find an ambience

Describe how you feel (“exhausted, but my mind is racing”), and the app suggests a mix of sounds, with a volume for each one, plus a sentence explaining why it chose them.

What’s sent: the words you type and the app’s list of sounds. Nothing else.

It works without a connection too. A built-in word list takes over when the model doesn’t respond, and the screen tells you which of the two answered. Getting weaker suggestions without knowing why would be worse than being told.

The dream journal

Discover tab → Your nights → Dream journal

It’s just a text field and a date. Write down what you remember when you wake up.

Your dreams stay on this phone. They aren’t uploaded to your account, even if you have one. That’s stricter than for your saved atmospheres, and the reason is what they contain: a mix of sounds says you like rain, but a dream says something else. The trade-off is spelled out in the app: your journal won’t follow you to a new phone.

There’s one exception, and it asks for your consent every time. The “Ask for a comment” button sends the text of that one dream to the model. Nothing else is sent: not the date, not your earlier dreams, and not your nights. Writing a dream down never sends it anywhere, and saying no doesn’t remove anything from the journal.

There’s no dictation. It would mean sending the audio of your voice to Apple or Google, which the app doesn’t do.

Analyzing your nights

Discover tab → Your nights → Have my nights read

The app already calculates five findings from your last thirty nights (how regular your bedtimes are, how much your sleep length varies, late nights) and up to two suggestions. All of that is arithmetic, done offline, and it shows up without you asking for anything.

The button adds a three-sentence reading: what a human eye would notice in those numbers that the list doesn’t say.

What’s sent: the bedtime, wake time, and length of your most recent saved nights, the day of the week for each, the target duration you set, and the names of the findings already shown.

If Apple Health or Health Connect has measured your nights, a switch appears under the analysis: “Use my measured nights for the analysis.” It’s off by default. When it’s on, the app also sends the measured times: when you fell asleep, when you woke up, and how long you were actually asleep. That fixes a known flaw: the bedtime the app estimates is rewritten every time you pick up your phone, and it can be off by two hours.

Sleep stages are never sent. Deep, REM, and light sleep are measured by your watch, shown by the app, and shared with no one, under any setting.

No score, no rating out of 100. That would mean deciding how much an hour of deep sleep is worth compared with an hour of REM, and nobody has measured those weights. We’d be making them up.

The coach

Discover tab → Coach

The coach puts two things in one place: a weekly review that looks at what changed compared with the days before, and tips on a topic you choose, such as screens, schedules, caffeine, or the bedroom.

What’s sent for a tip: only the topic. None of your nights, and none of your numbers.

A tip never uses one of your nights as its reason. You’ll never see “you snored for forty-two minutes, so sleep on your side.” Tied to a measurement, a general habit turns into advice drawn from a number, and the app hasn’t measured what that would take.

And it never describes a physiological effect. The coach may write that many people find they snore less on their side. It doesn’t explain why, doesn’t mention any part of the body, and doesn’t suggest seeing a doctor: that would be a prescription, not a habit.

Tune for my room

Mixer tab → Tune for my room

It answers a question nobody can answer by ear: is your atmosphere loud enough to cover the noise in your room, or louder than it needs to be? The app measures it.

It measures the room’s sound level in silence, then with your mix playing, and works out the difference. Then it tells you whether to turn it up, turn it down, or leave it as is, and by how much.

Nothing is kept, not even the number. The stream is reduced to a level, the calculation turns that into a difference, and the difference is displayed. Closing the screen forgets it.

This isn’t a measurement in absolute decibels. A phone’s microphone isn’t calibrated, so the app can’t tell you how many decibels your room is, and it doesn’t claim to. A difference between two readings from the same microphone in the same spot is valid without calibration, and that’s exactly what you need to set a volume.

It never starts on its own: not at launch, not when you open the mixer, and not when a new night comes in.

The subscription

Me tab → Subscription

What’s free, and stays free without a subscription: the twenty-five recorded sounds, the mixer, your saved atmospheres, the sleep timer, Relax and Focus in ten-minute sessions, guided breathing and meditation, the night log, and the dream journal.

The alarm rings without a subscription: at the time you set, on the days you choose, with the bedtime reminder, and a single tap turns it off.

What the subscription unlocks: the eighteen computed sounds out of forty-three, and with them Move, which is built on one of them; snoring detection; the findings about your nights; the five features that use a language model; four alarm settings (gradual wake-up, ringing earlier at the end of a cycle, anti-snooze, and movement); and Relax and Focus beyond ten minutes. The rule is simple: what took work to build is what you pay for.

A padlock doesn’t hide or erase anything. The paid rows in the alarm menu stay visible and show the value the alarm actually uses, so they read “off” and “none” while the padlock is there. And if you subscribe, the settings you had chosen come back exactly as they were, so there’s nothing to redo.

US$4.99 a month for a single, individual subscription. It comes with a 3-day free trial, and you can cancel at any time.

You start the trial from the Me tab → Subscription, and it requires an account: the trial is tied to your account, not to your phone. The time remaining shows on that same row (“Trial: 2 days left”), and when it ends, everything goes back to the free version without erasing anything.

Once per account. The start date is stored on our servers, and the server is what decides whether there’s time left. Changing your phone’s clock won’t reopen the trial; at most, it pauses the countdown. A date stored on the phone would reset whenever the app’s data was cleared.

You cancel through your app store, not in Luzeed. On iPhone: Settings → your name → Subscriptions. On Android: Play Store → Payments & subscriptions. The price that applies is the one your store shows in your currency.

We never see your payment method. No card, no billing address: Apple and Google don’t share them with us. The terms of use explain this in detail.

Your account and guest mode

Me tab → Create an account or sign in, or Delete my account at the very bottom

Everything works without an account. The sounds, the alarm, the log, and the timer: nothing is held back in guest mode.

An account does just one thing: it brings your saved atmospheres to another device. You can create one later, or never.

To delete it, go to the Me tab, scroll to the very bottom, and tap Delete my account. Your account and synced atmospheres are erased, along with the local history. This is permanent, and you can keep using the app as a guest.

Permissions

Outside the app: Settings → Luzeed → Notifications, Alarms, and Location

Notifications are required for the alarm. If you don’t allow them, the alarm switch turns itself back off: leaving it on would promise an alarm that the system won’t let through.

Alarms & reminders (Android 12 and later) lets Luzeed ring at the exact time, even when the phone is in deep sleep.

Alarms (iOS 26) lets Luzeed ring over the Lock Screen, like the iPhone’s Clock app. It’s separate from notifications, and that’s the catch: you may have allowed one and never the other. Without it, the alarm rings only if the app made it through the night, which iOS doesn’t guarantee. If you don’t allow it, the alarm switch turns back off, and the app tells you which of the two is missing.

The bedtime reminder needs notifications, and it asks for them when you turn it on. If you don’t allow them, its switch turns back off: a notification that iOS blocks would never arrive, and letting you think otherwise would be worse than not offering it at all.

🔴 You’ll find both in Settings → Luzeed. If you said no once, iOS won’t ask again, so that’s where you turn them back on. And after you allow them, turn the alarm switch off and then on again: whatever failed before isn’t retried automatically.

Location is used only for clarity that follows the daylight, and it’s approximate. It’s requested the first time you tap “Follow the daylight” or the weather switch, never at launch. If you don’t allow it, the clarity follows the sun in your time zone, and the weather stays off. On iPhone, the request includes a second sentence about access “all the time.” Luzeed never asks for that; a library requires the sentence.

Your steps, from Apple Health or Health Connect, are used only for Move and for the soft footstep that follows your steps. The app asks when you start Move or turn on “Follow my steps,” never at launch. If you don’t allow it, Move still starts, the soft footstep stays at a hundred per minute, and the screen tells you so.

The microphone is used for two things, both only when you ask: snoring detection, which is off by default, and Tune for my room. The permission request appears only the first time you use one of them, and no sound is recorded.

If something goes wrong

Me tab → Help → type what isn’t working

The alarm didn’t ring

First, check that the switch is still on. If it turned itself off, a permission was denied. On Android, also make sure battery saver isn’t restricting Luzeed.

A sound says “unavailable”

The file couldn’t be loaded. This is rare, and it doesn’t affect the other sounds: the eighteen computed sounds always work, since there’s nothing to load.

I can’t hear the binaural beat

Put on headphones. See above.

My atmosphere doesn’t show up on my other phone

Check that you’re signed in to the same account on both phones. In guest mode, atmospheres stay on the device, and the app says so under the list.

The sound stopped on its own

A timer was set. Look at the button at the bottom of the mixer: while a timer is running, it shows the time left.

What’s changed

Me tab → Help, at the bottom of the list

This page keeps up with the app: every feature you can see while using it is added here in the same commit as the code.

0.2.0

Binaural beats, a timer saved with the atmosphere, a bedtime reminder, a first launch that asks what you’re looking for and shows it on your Home tab, a way into the subscription plans, and saved atmospheres that you can rename, adjust, and delete. The first launch now also gives an animated walkthrough of everything the app does (one page per feature, advancing on their own) before it offers an account. It tells you up front what requires the subscription, instead of leaving you to find out from a padlock. And a redesigned interface: a picture for every sound, a ten-second preview before you add one, the alarm days below the time, and search in Discover, where guided meditation now sits next to breathing.

0.1.0

Thirty-five sounds, saved mixes, a cycle-based alarm with gradual wake-up, anti-snooze, repeat days, the night log, reading from Apple Health, and an optional account.