Head to head
Apple Health Sleep vs Sleep Cycle
The Watch question settles most of this, so answer it before you read a single row of the table below.
In short
If you wear an Apple Watch to bed, Apple's built-in tracking is more accurate and costs nothing, so Sleep Cycle has to win on the alarm and the sound library instead. If you don't own a Watch, Sleep Cycle is the only one of the two that records anything.
Whether you wear a Watch to bed decides which of these is better
With an Apple Watch, Apple's own tracking produces measured stage data, costs nothing, and lands in the app everything else reads from. That's a hard offer to beat with a microphone.
Without one, Apple's side is mostly a schedule and a Focus, and Sleep Cycle becomes the only one of the two that records a night at all.
A microphone on the nightstand estimates, a Watch measures
Sleep Cycle is the original phone-microphone sleep tracker and it's good at what it does, which is inferring the shape of a night from sound and movement in the room. That's genuinely useful for patterns, timing and trends.
It isn't reading your body, so treat the stages as an estimate. Any app that calls phone-derived stages measured is overselling.
Measured stage data needs something on your body. Everything else is an estimate, however good the estimate is.
A smart alarm window is the thing Apple will not do
Apple's Sleep schedule sets a wake time and the Clock app rings on it, exactly, every morning. Sleep Cycle rings inside a window instead, aiming for a kinder moment near your alarm.
It also brings a large library of sleep aids for the half of the problem that happens before you fall asleep, which Apple doesn't attempt.
There is a version that does both jobs at once
Tock tracks from the phone with the microphone and accelerometer, classifies snores, coughs and sleep talking on device, and keeps the clips so you can hear what woke you. The alarm runs on AlarmKit, so it still fires on silent, through a Focus and with the app closed.
It reads your Apple Health data rather than competing with it, and it calls phone-only stages estimates.
| What we compared | Apple Health Sleep | Sleep Cycle |
|---|---|---|
| How the night is read | Watch sensors on you (about the same) | The phone microphone (about the same) |
| Sleep stages | Measured with a Watch (stronger here) | Estimated from sound |
| Waking you gently | Fixed schedule only | Rings inside a window (stronger here) |
| Cost to start | Free, already installed (stronger here) | A separate app |
| Years of your own history | Since you turned Sleep on | Years, if you started early (stronger here) |
| Android in the house | Apple devices only | Both platforms (stronger here) |
| Getting to sleep | Nothing on offer | A large library of aids (stronger here) |
| What other apps read | The system of record (stronger here) | Its own app first |
Which one to actually install
Pick Apple Health Sleep if
Apple wins for the Watch wearer who wants the truth of the night and nothing else. Measured stages, no cost, no second app, and the data sits where everything else can read it.
Pick Sleep Cycle if
Sleep Cycle wins for the person with no wearable and no intention of getting one. It records from the nightstand, rings inside a window instead of on the dot, and brings a large library of sleep aids.
Pick neither if
The gap both of these leave is an alarm that knows what the night was doing. Tock rings on AlarmKit, tracks from the nightstand with the microphone and accelerometer, and can move the ring a few minutes earlier into a lighter moment. A 3-day trial, then from $39.99 a year.
Questions people ask
Is Sleep Cycle accurate without a Watch?
It's doing its best from sound and movement in the room, which works well for patterns and timing. It isn't measuring your body, so read the stages as an estimate.
Does Apple's Sleep schedule have a smart alarm?
No. It sets a bedtime and a wake time and the Clock app rings on it. Choosing a lighter moment inside a window is the thing apps like Sleep Cycle add.
I have an Apple Watch. Do I still need Sleep Cycle?
For the tracking, probably not. For the alarm window and the sleep aids, maybe. That's the real trade on this page.
Will Sleep Cycle still work if I switch to Android?
Yes. It runs on both platforms, which is one reason households with a mix of phones end up on it. Apple's Sleep schedule doesn't travel.
Where Tock sits against each of them
These pages are written the same way as this one, which means they state what Apple Health Sleep and Sleep Cycle each do better than we do.
Related matchups
Other pairings involving one of these two.
- Alarmy vs Sleep CyclePick Alarmy if you sleep through alarms and need one you can't beat. Pick Sleep Cycle if you wake up on time but feel wrecked when you do, and you want a gentler window plus a record of the night.
- the iPhone Clock app vs Apple Health SleepThis isn't a choice. The Clock app is the alarm and Apple's Sleep schedule is the plan around it, and if you wear an Apple Watch to bed the Sleep side is the only one of the two that records anything at all.
- Apple Health Sleep vs AutoSleepIf you wear your Apple Watch to bed and want to know how long you slept, Apple's own tracking is free and already doing it. AutoSleep is for the person who wants that night pulled apart into far more detail than Apple would ever ship.
- Apple Health Sleep vs PillowApple's built-in tracking is enough if you want hours and stages and nothing more. Pillow is for the Watch wearer who finds Apple's presentation too thin and wants the night detected and shaped for them without pressing anything.
- Apple Health Sleep vs RiseApple is the better record and Rise is the better plan. If you keep opening your stage chart and still don't know what to change, Rise is the one built to answer that.
- AutoSleep vs Sleep CycleIf you already wear an Apple Watch to bed, AutoSleep reads a night that Sleep Cycle can only estimate from the room. If you don't own a Watch and don't want one, Sleep Cycle is the only one of the two that works, and it's your alarm as well.
- Calm vs Sleep CycleIf the problem is lying awake with a busy head, Calm. If the problem is groggy mornings and having no idea what your nights look like, Sleep Cycle. Most people searching this have already decided which; they just have not said it out loud.
- Pillow vs Sleep CycleIf you wear an Apple Watch to bed, Pillow gives you measured stage data and starts itself. If you do not own a Watch, or half the house is on Android, Sleep Cycle is the sensible pick.
Elsewhere on the site
A different corner of the same problem.
- FeaturesSnore recordingTock keeps short audio clips of the things it hears in the night and pins each one to the minute it happened. Snoring, coughing and sleep talking are labelled by name, and every clip has a play button in the morning.
- Sleep soundsLate cafeA cafe bed works because a room with people in it reads as safe, and it only keeps working while none of the voices are intelligible. The moment you can pick out a word you start following it, and following language is the opposite of falling asleep, which is why Tock generates the murmur instead of recording a real room.
- Tock for youNight owlsYou are wide awake at 1am and useless at 7am, and every piece of advice you have ever read starts with going to bed earlier, which you have done, repeatedly, while staring at the ceiling.
- AlternativesTock vs AlarmyIf all you need is a harder alarm, Alarmy has more dismissal tasks than Tock and a free tier, so it is the sensible pick. Tock is worth paying for when you want the night tracked and the ring moved earlier into light sleep, with a mission still standing between you and the off button.
- RoundupsThe best free alarm apps for iPhoneThe best free alarm app for iPhone is the Clock app that came with it. It is free forever, it rings through silent mode and a Focus, and it has never failed. Alarmy is the best free option if you need an alarm that is hard to turn off. Tock is not free and is listed last for that reason.
- Wake timesWaking up at 4:00amBedtimes by sleep cycle for a 4:00am alarm.
If neither of them is quite the alarm you wanted
Tock is built on Apple AlarmKit, so it rings on silent and through a Focus, moves earlier when it finds a lighter moment, and keeps ringing until you solve something.