Sleep music
Start the night with calming sound and let the timer stop playback for you.
Sleep better on iPhone
Better sleep, one calm app
Play sleep music, track the night with your phone's microphone, and wake up to a clear journal and trends view.
- No wearable neededTracking runs on the iPhone beside your bed. No watch, ring, or mattress sensor.
- Bought once, for USD 2.99No subscription, no in-app purchase, no ads. Nothing you use today moves behind a paywall later.
- Nothing is recordedAudio is scored a minute at a time on the device, then deleted. None of it is stored or uploaded.
Privacy
No recordings storedSleep timer
10 / 15 / 20 / 30 min
The facts
Restful, stated plainly
What the app is, what it costs, and what it does not do — in one place, so you do not have to read a landing page to find out.
- What it is
- An iPhone and iPad app that tracks your sleep using the phone microphone, plays sleep sounds, times naps, and wakes you with an alarm.
- Price
- USD 2.99, paid once. No subscription, no in-app purchase, no advertising, no paid tier.
- Hardware required
- None beyond the phone. No Apple Watch, no ring, no mattress sensor.
- Platform
- iPhone and iPad, iOS 13.0 or later. No Android version.
- Interface languages
- English, Simplified Chinese, Japanese, Korean.
- How tracking works
- The microphone signal is analysed on the device in one-minute pieces and each piece is deleted immediately after scoring. No audio is stored or uploaded.
- What you get each morning
- A sleep score, total sleep, deep sleep, sleep onset and wake time, and a curve of awake, light and deep phases. Saveable as an image.
- Trends
- 7 days, 4 weeks, 120 days, or all recorded nights. Available after seven tracked nights.
- Sounds
- Four nature tracks, four night-city ambiences, and a ten-channel mixer (ocean, stream, rain, thunder, wind, campfire, crickets, singing bowl, cafe, white noise) with a volume slider per channel. Audio timer of 10, 15, 20 or 30 minutes.
- Nap mode
- Unlimited, 10, 20, 30 or 60 minutes, or a custom length up to six hours, ending with your chosen wake tone.
- Alarm
- Fixed-time alarm, 17 wake tones, shake-to-snooze, configurable snooze interval and a limit on total snooze time.
- Account
- Not required. Journals are stored locally on the device and the app works offline. Signing in is optional and only backs journals up.
- Publisher
- Curastone CORP. Restful is a general wellness app, not a medical device.
What Restful does not do
- It is an estimate, not a measurement
- Microphone-based sleep staging cannot match a clinical sleep study. A still, quiet hour spent reading can read as sleep. Use the weekly pattern, not one night.
- The phone must be charging
- Overnight tracking needs the phone plugged in and near the bed. If the screen stays locked on battery for about an hour, the session ends and no journal is written.
- No smart alarm
- The alarm rings at the time you set. It does not move inside a light-sleep window based on the tracking data.
- Naps are not scored
- Nap mode times and wakes you, but microphone sleep tracking runs only in overnight mode.
- No snore detection
- Restful does not detect, record or analyse snoring.
- No ratings yet
- Restful is new and from a small team, so there is no wall of App Store reviews to reassure you.
What you get
Fall asleep, track, review
Fall asleep with sound, follow the night with your phone, and review a morning summary that is easy to scan.
Phone-based tracking
Track sleep quality with your iPhone microphone instead of another device.
Morning review
Open a clear journal, score, and trends view without hunting through menus.
How it works
From bedtime to morning
Each step has one job to explain. That keeps the page easy to scan and makes the next action obvious.
01
Wind down
Pick a soundscape, set a timer, and let the room settle with you.
02
Sleep
Leave your phone by the bed and let Restful follow the night with live microphone-based analysis.
03
Review
Check your journal and trends in the morning, then tune tomorrow night from what you learned.
Privacy and trust
Privacy, clearly explained
Microphone input is used only for live sleep analysis. No recordings are stored.
Nothing is recorded
Each minute of audio is scored on the device and deleted straight away. The working folder is cleared when the session ends.
Nothing is uploaded
Sleep journals live in a local database on the phone. No account is required and the app works offline.
Nothing is sold to you later
One purchase, no subscription and no in-app purchase, so there is no upgrade prompt waiting behind a feature you already use.
Questions
What people ask before buying
Straight answers about how the tracking works, what it costs, and what the app does with the microphone.
Does Restful need an Apple Watch or another wearable?
No. Restful analyses your night using the iPhone microphone, so the only device you need is the phone already beside your bed. There is no wearable, ring, or mattress sensor to buy.
How does Restful track sleep without a wearable?
While you sleep, Restful listens for movement and sound through the iPhone microphone and turns that signal into a nightly sleep curve of awake, light, and deep phases. The analysis runs live on the night in progress, on the device itself.
How accurate is microphone-based sleep tracking?
It is an estimate, not a measurement. Sound and movement are a useful proxy for how settled a night was, but no phone-based method can stage sleep the way a clinical sleep study does, and a still, quiet hour spent reading can read as sleep. Restful is most useful for the pattern across weeks, not for the exact number on any single night.
Does Restful record or store audio overnight?
No. Audio is analysed in one-minute pieces and each piece is deleted as soon as it has been scored, and the working folder is cleared at the end of the session. Nothing is kept on the phone and no audio is uploaded anywhere.
How much does Restful cost, and is there a subscription?
Restful is a one-time purchase of USD 2.99 on the App Store. There is no subscription, no in-app purchase, no advertising, and no paid tier. Everything in the app is available from the first night.
Does my iPhone need to be plugged in?
Yes, for a full night. Restful needs the phone charging and resting near the bed. If the screen stays locked on battery power for about an hour, the session ends and no journal is written for that night, so connect the charger before you start.
What does Restful show in the morning?
A journal entry for the night with your sleep score, total sleep, deep sleep, when you fell asleep, when you woke up, and a curve showing awake, light, and deep phases. You can save that summary as an image.
When do the trends and insights appear?
The journal is there from your first tracked night. The Insights tab needs seven tracked nights before it fills in, because averages and weekday patterns are not meaningful before that. After that it covers 7 days, 4 weeks, 120 days, or every night you have recorded.
What sounds are included?
Four full-length nature tracks - heavy rain with thunder, ocean, a babbling brook, and a lone campfire - plus four night-city ambiences for Tokyo, New York, Paris, and Shanghai. There is also a ten-channel mixer you blend yourself: ocean, stream, rain, thunder, wind, campfire, crickets, singing bowl, cafe, and white noise, each with its own volume slider, and your mix is remembered. A 10, 15, 20, or 30 minute timer stops playback once you drift off.
Does Restful have a smart alarm that wakes me during light sleep?
No. Restful has a fixed-time alarm with 17 wake tones, shake-to-snooze, a snooze interval you choose, and a limit on how long you can keep snoozing. It does not move your alarm inside a wake window based on the sleep data.
Can Restful be used for naps?
Yes. Nap mode is its own screen with its own length picker - unlimited, 10, 20, 30, or 60 minutes, or a custom length up to six hours - and it wakes you with the tone you chose. Naps use the same sound library as overnight sleep. Microphone sleep tracking runs only in overnight mode, so naps are timed and woken but not scored.
How is Restful different from Sleep Cycle, ShutEye, or BetterSleep?
Those apps are free to download and paid for by subscription. Restful is bought once for USD 2.99 and has no subscription, no in-app purchase, and no advertising, so nothing you use today can move behind a paywall later. In exchange, Restful is a smaller app from a small team with no ratings yet, and its sound library is deliberately short rather than a catalogue of thousands.
Do I need an account, and does my sleep data leave the phone?
No account is required. Sleep journals are stored in a local database on the device, and the app is fully usable offline. Signing in is optional and only exists to back journals up.
Which devices and languages does Restful support?
iPhone and iPad running iOS 13.0 or later. There is no Android version. The app interface is available in English, Simplified Chinese, Japanese, and Korean.
Is Restful a medical app?
No. Restful supports general wellness and sleep habits. It is not a medical device, and it does not diagnose, treat, cure, or prevent any condition. If you have ongoing concerns about your sleep, speak to a doctor.
Compared
How Restful compares
Every close competitor is free to download and paid for by subscription. These pages say plainly where each of them is the better buy, and where Restful is.
Download
Get Restful for iPhone
Restful is a one-time purchase. No subscription, no ads, and no wearable to buy — the sleep tracking runs on the iPhone you already own.
Requires iOS 13.0 or later. Overnight tracking works best with the iPhone plugged in and resting near the bed.