KnowSleep

KnowSleep does not measure your sleep, and it does not upload anything. It reads the night your Apple Watch has already written into Health, and explains it on your iPhone. One reading, every morning How long you slept, how much deep sleep, when you fell asleep, how often you woke — each compared against your own usual figures, then read back as one conclusion. Add a note that you had coffee in the afternoon or were on your phone in bed, and the reading takes it into account. Only you, against you No "you sleep worse than 80% of people your age". Every comparison is to the median of your own recent nights. What counts as a lot of deep sleep, or as an early bedtime, is settled by your records alone. A sleep score you can open up Duration, bedtime consistency and night-time interruptions: how much each is worth, and what this night earned on each. Anything that could not be measured is left out rather than scored as zero. Trends by week, month, quarter, year — or any range you pick Seven metrics over any stretch of time. Tap any night to open that night. Reports (KnowSleep Pro) Weekly, monthly, quarterly and yearly: a whole stretch of nights read as one, compared with the stretch before it, and checked against the behaviours you tagged — "on the 12 nights you tagged coffee, median deep sleep was 18 minutes lower". That takes enough nights to say honestly; when there aren't enough, KnowSleep says so instead of inventing a conclusion. Your data stays on the device No server, no account, no analytics SDK. Every calculation happens on this iPhone. Everything can be exported as a single JSON file, or erased in one tap. What you need An iPhone running iOS 17 or later. Sleep stages and overnight heart rate need an Apple Watch worn to bed; without one the app still works, reading bedtime and time in bed. The watch needs Sleep Focus turned on, or watchOS records no sleep stages at all. KnowSleep reads sleep habits. It is not medical advice and makes no diagnosis. See a doctor about anything that persists. About the subscription Every night's own data, score, charts and daily reading are free for ever. KnowSleep Pro unlocks the periodic reports, as a yearly subscription (with a 7-day free trial) or a one-time lifetime purchase. A subscription renews within 24 hours of the end of the period and can be turned off any time in Settings – Apple ID – Subscriptions; the lifetime purchase is paid once and does not renew. Terms: https://knowsleep.soakout.com/terms.html Privacy: https://knowsleep.soakout.com/privacy.html