Understand last night's sleep in seconds
SleepKit turns the Apple Health data you already collect into three simple rings - Duration, Consistency, Quality. No manual logging, no confusing score.
iPhone · Apple Health · No account needed
A clearer way to see how you slept
Three specific signals instead of one number you can't act on.
Three rings, never one score
Duration, Consistency, and Quality stay separate - always. No blended number, no band label, no daily verdict on your own body.
Reads Apple Health automatically
SleepKit connects with one permission tap and reads your sleep, heart rate, and HRV straight from Health. Nothing to log, ever.
Recovery, right on the home screen
Resting heart rate and HRV sit alongside your rings with week sparklines - useful context on how your body is actually doing.
Private by default
SleepKit only reads your data - it never writes to Apple Health. Friends see a display name, photo, and your latest rings, nothing more.
Free sleep calculators
No sign-up, no ads in your way. Quick tools for bedtime, sleep debt, jet lag, and more - then take it further in the app.
Sleep Cycle Calculator
Enter your wake-up time to find the best bedtimes based on complete 90-minute sleep cycles, so you're less likely to wake up mid-cycle.
TimingBedtime Calculator
Enter your bedtime to find the best wake-up times based on complete sleep cycles, so your alarm doesn't catch you mid-cycle.
TimingNap Calculator
Find the ideal nap length and wake-up time to recharge without the grogginess of waking up mid-cycle or from deep sleep.
TimingSleep Debt Calculator
Log a week of actual sleep against your nightly need to see how much sleep debt you've built up - and how many nights it'll take to repay it.
Debt & NeedSleep Need Calculator
See the recommended sleep range for your age group, based on National Sleep Foundation guidelines.
Debt & NeedSleep Efficiency Calculator
Calculate your sleep efficiency - the percentage of time in bed you actually spent asleep - from your time in bed and time asleep.
QualityFrom raw data to a clear picture
Connect Apple Health
One permission tap. SleepKit reads sleep, heart rate, and HRV automatically.
Wake up to three rings
Duration, Consistency, and Quality for last night, no logging required.
Watch your baseline build
After 14 nights, rings compare against your own rolling 28-night pattern.
Made for how you sleep
Rotating shifts, red-eye flights, or just tired of a nightly score - there's a reason SleepKit fits. Find your situation.
Frequently asked questions
Why doesn't SleepKit show a sleep score?
A single blended number hides which part of the night was actually off, and it turns sleep into a daily verdict on your own body. SleepKit shows three separate rings - Duration, Consistency, Quality - instead.
Do I need to log my sleep manually?
No. SleepKit reads sleep sessions, stages, heart rate, HRV, and more automatically from Apple Health - there's nothing to enter by hand.
What do I need to use it?
An iPhone, and sleep data in Apple Health - from your iPhone or any wearable that writes to Health, like Apple Watch. SleepKit only reads that data; it never writes to Health.
Is Friends private?
Yes. Friends see a chosen display name, photo, and your latest three ring values - never your sleep history, raw Health data, or an aggregate score. Duration is visible only until the end of your local sleep day.
See last night, made clear
SleepKit reads Apple Health automatically and turns it into three simple rings - Duration, Consistency, Quality. No score, no manual logging.
iPhone · Apple Health · No account needed