Annonces
A sleep tracking app can tell you when you went to bed, roughly how long you slept, and whether your schedule drifts on weekends. It can’t tell you, with any real accuracy, exactly how many minutes of deep sleep you got last night, and it can’t tell you whether you have a sleep disorder. Knowing that difference is the key to getting something useful out of these apps instead of a new thing to worry about.
This guide covers the apps people use most in 2026 (Sleep Cycle, SleepScore and Pillow), the sleep features already on your iPhone or Android phone, and the wearables that do most of the heavy lifting. For each, you’ll see how it measures sleep, what it costs in the US, and where it falls short. Treat them as wellness tools, which is what they are.
A quick but important note: nothing here is medical advice. If you have trouble sleeping most nights for several weeks, snore loudly with pauses in breathing, or feel very sleepy during the day, talk to a doctor. A sleep app is not a substitute for that conversation, and a doctor can order a proper sleep study if needed.
What a sleep tracker can and can’t tell you
Phones and wearables don’t measure your brain. Clinical sleep studies (polysomnography) use sensors on your head to read brain waves, and that’s how sleep stages are defined. Consumer devices estimate sleep from other signals: movement, heart rate, heart rate variability, breathing sounds or, with a phone on the nightstand, the sound of you moving in bed.
That’s why these numbers deserve different levels of trust.
- Fairly useful: what time you fell asleep and woke up, total time in bed, consistency from night to night, and trends over weeks.
- Rough estimates: total sleep time (most trackers miss some time you lie awake quietly), and how often you woke up.
- Least reliable: the exact split between light, deep and REM sleep on a single night. Wearables do better than phone-only apps here, but it’s still an estimate.
The practical takeaway is to look at weekly averages and trends, not last night’s score. If your score drops from 82 to 74 after one bad night, that’s noise. If your bedtime has crept 90 minutes later over a month, that’s worth acting on.
One more thing: some people sleep worse once they start tracking because they lie in bed worrying about the score. Researchers even have a name for it, orthosomnia. If checking the app makes you anxious, hide the score for a week, or stop tracking. Your body doesn’t need the app to sleep.
The quick comparison
| App or device | How it tracks | Price (US, Oct 2026) | Works on |
|---|---|---|---|
| Sleep Cycle | Phone microphone, or Apple Watch | Free core features; Premium listed around $40 to $58 a year | iPhone and Android |
| SleepScore | Phone sonar (contactless), or wearable data | Free; Premium $9.99/month or $59.99/year | iPhone and some Android phones |
| Pillow | Apple Watch, or iPhone on the bed | Free; Premium $19.99/month or $49.99/year | iPhone only |
| iPhone Sleep + Health | Schedule, plus Apple Watch data | Free (built in) | iPhone |
| Android Bedtime mode | Schedule and phone use | Free (built in) | Most Android phones |
| Wearables (Apple Watch, Google Health with Fitbit or Pixel Watch, Oura, Galaxy Watch) | Heart rate, movement, temperature | Device cost, some with a membership | Varies |
Apps that use your phone
Sleep Cycle
Sleep Cycle is one of the oldest sleep apps and still one of the most popular. Put your phone on the nightstand, and it listens through the microphone to how you move and breathe during the night. Its best-known feature is the smart alarm: you set a wake-up window (for example 6:30 to 7:00), and it tries to wake you at a moment when you seem to be in lighter sleep.
It suits people who want a phone-only tracker with a gentle alarm, no watch required. The free version includes the smart alarm, sleep analysis and the nightly graph, and it syncs with Apple Health or Health Connect on Android. Premium adds snore detection with audio clips, sound detection (talking, coughing), full statistics, sleep aid sounds and programs. In the US App Store, Premium is listed at several prices, around $40 to $58 a year depending on the offer, so check the price shown inside the app before you subscribe.
The limits: the microphone method can be confused by a partner or a pet in the bed, and the sleep stages are estimates from sound and movement. Snore recordings are interesting, but they aren’t a diagnosis. If they show loud snoring with silences, bring that up with a doctor.
My tip: give the smart alarm a 30-minute window for a week before judging it. A 10-minute window doesn’t give it much room to work.
SleepScore
SleepScore uses sonar: the phone’s speaker sends out sound the app says you can’t hear, and the microphone picks up the echo from your chest moving as you breathe. Nothing touches you, and the phone sits on the nightstand pointed at you. The app gives you a nightly score and suggestions about your routine and bedroom.
It’s a good option for people who don’t want to wear anything to bed. The catch is compatibility. On Android, contactless sonar tracking is validated only on a list of specific phones (mostly older Samsung Galaxy and Pixel models), and other Android phones may need to join a beta program. Check the app’s supported device list before paying.
SleepScore is free to download, with Premium at $9.99 a month or $59.99 a year in the US, with a 7-day trial. Premium adds full history, deeper insights and a printable report you can bring to a doctor’s appointment, which is a sensible feature if you already plan to talk to one.
My tip: place the phone at the height of your chest, within about an arm’s length, with the speaker facing you. Most bad readings come from the phone being too far away or facing the wall.
Pillow (iPhone only)
Pillow is built for Apple users. With an Apple Watch, it can track sleep automatically, with no need to start a session at bedtime. Without a watch, you put the iPhone on the mattress. The app shows sleep stages, heart rate during the night (with a watch), audio recordings of snoring or talking, and a smart alarm.
It’s the most polished option here for iPhone and Apple Watch owners who want more detail than the built-in Sleep app. It doesn’t exist on Android, and the phone-on-the-mattress mode is less reliable than the watch mode.
Pillow is free with limited history. Premium is $19.99 a month or $49.99 a year in the US App Store. If you plan to keep using it, the yearly plan is much cheaper.
My tip: turn on automatic tracking only after a few nights of manual sessions. That way you can compare and see whether the automatic mode is picking up your real bedtime.
What’s already on your phone
iPhone: Sleep schedule and the Health app
Every iPhone has a sleep schedule built in. Open Health, tap Browse, then Sleep, and set a bedtime and wake-up time. The Sleep Focus turns on at bedtime to silence notifications, and Wind Down can start the Focus earlier. Apple’s guide to tracking your sleep in Health walks through each setting.
Without a watch, the iPhone logs time in bed based on your schedule and phone use, not actual sleep. With an Apple Watch (Series 6 or later, SE 2nd generation or later, or any Ultra) and iOS 26, Health also shows a nightly Sleep Score based on duration, bedtime consistency and interruptions. The score can also use sleep data from compatible third-party trackers that write to Health. It’s free and, for many people, enough.
Android: Bedtime mode and Google Health
On most Android phones, Bedtime mode lives under Settings > Digital Wellbeing & parental controls > Bedtime mode. It can turn the screen grayscale, silence notifications and show how much you used your phone after bedtime. On Samsung phones, the same idea is in Settings > Modes and Routines, with a Sleep mode. Menu names change a bit between brands and Android versions, so search “bedtime” in Settings if you don’t see it.
For actual sleep tracking on Android, you need either an app like Sleep Cycle or a wearable. In 2026, Google’s own health app is called Google Health (it’s the renamed Fitbit app), and it tracks sleep with a Fitbit or Pixel Watch. Samsung Health does the same with a Galaxy Watch or Galaxy Ring.
Wearables: where the better data comes from
If you care about sleep data over the long term, a wearable gives better estimates than a phone on the nightstand, because it reads your heart rate and movement directly. The main options in 2026:
- Apple Watch, with sleep tracking in the Sleep app and the Sleep Score in Health. Battery life is the weak point, so charge it before bed or during your morning shower.
- Pixel Watch or Fitbit trackers, through the Google Health app. Some sleep details sit behind Google Health Premium.
- Oura Ring, which many people find more comfortable than a watch in bed. The ring costs several hundred dollars, and most insights need a membership of $5.99 a month.
- Samsung Galaxy Watch or Galaxy Ring, through Samsung Health, best on a Samsung phone.
Some watches now offer notifications about possible breathing disturbances during sleep. These features are cleared for specific uses and can flag something worth checking, but they are not a diagnosis, and a lack of alerts doesn’t mean everything is fine. If one appears, or if you have concerns, see a doctor.
Turning the data into better habits
Data is only useful if it changes something. The habits sleep specialists most often suggest are simple, and an app can help you keep them. You can read more on the Sleep Foundation site, which explains the basics in plain language.
- Keep the same wake-up time every day, including weekends. Your tracker’s consistency chart shows if you’re keeping to it.
- Watch the gap between “in bed” and “asleep.” If it’s often over 30 minutes, look at screen time and caffeine late in the day.
- Use your phone’s bedtime mode so notifications don’t wake you.
- Get daylight in the morning and move during the day. A walk counts, and a step counter app can track it.
Keep the phone charging if it’s tracking overnight. A sleep app running all night with the screen off uses some battery, and our guide on making your battery last longer covers the settings that matter.
Common questions
Are sleep tracking apps accurate?
They’re reasonably good at bedtime, wake time and overall trends, and less accurate for sleep stages on a single night. Wearables are more accurate than phone-only apps, but none of them match a clinical sleep study.
Do I need an Apple Watch or ring to track sleep?
No. Sleep Cycle and SleepScore work with just a phone on the nightstand. A wearable gives better estimates, especially for heart rate and wake-ups.
Can a sleep app diagnose sleep apnea or insomnia?
No. Apps and wearables can show patterns you might want to discuss with a doctor, but only a healthcare professional can diagnose a sleep disorder.
Is it safe to keep my phone in bed?
Keep it on the nightstand when possible, plugged in only with a good charger, and never under a pillow, where it can overheat. Apps like SleepScore are designed to work from the nightstand.
A simple setup for this week
Start free. On iPhone, set a sleep schedule in Health and turn on Sleep Focus. On Android, turn on Bedtime mode. Then add one tracker: Sleep Cycle if you only have a phone, or your watch’s built-in sleep tracking if you already own one. Don’t add a paid plan for the first two weeks.
After two weeks, look at three numbers only: your average bedtime, your average wake time, and how much they vary. Pick one small change, like going to bed 20 minutes earlier on weeknights, and keep it for another two weeks. If you still feel tired most days despite enough time in bed, that’s the moment to stop adjusting apps and book an appointment with your doctor.
