Hypnogram
Test your sleep habits
Only for iPhone
Free · In‑App Purchases
iPhone
Your sleep tracker scores your night. Hypnogram tells you which of your own habits line up with your best and worst ones — measured against your own nights, not averages.
Your sleep tracker tells you how you slept. It never tells you why.
Hypnogram is the missing layer. You log what you actually did — alcohol, exercise, room temperature, morning sunlight, a wind-down routine — and it compares the nights you did each thing against the nights you didn't. Your nights, against your other nights. Never against an average, never against a guideline.
HOW IT WORKS
Connect Apple Health and Hypnogram reads whatever already writes sleep to your phone: an Apple Watch, an Oura ring, Whoop, Sleep Cycle, or any other sleep app. If you have history there, it can use up to two years of it on the first night. No wearable? The phone's own microphone can estimate your sleep instead — less accurate, and it says so.
Then log your habits in under a minute a day. Every habit you track becomes a ranked card showing the average on the nights you did it, the average on all your other nights, and the difference between them.
WHAT IT WILL NOT DO
It will not tell you that a habit improves your sleep. It measures which habits line up with your better and worse nights — association, not cause. Your results might say the opposite of what you expected, or nothing at all, and the app will say so plainly.
It needs at least three nights with a habit and three nights without it before it will rank anything. Something you do every single night has nothing to compare against, so it never gets a card. The things you sometimes skip are the ones that can actually be measured.
It is not a medical device and does not diagnose anything.
YOUR DATA STAYS ON YOUR PHONE
No account. No sign-up. No cloud sync. No analytics, no trackers, no advertising SDKs. Your sleep and habit data never leaves your device, because there is nowhere for it to go — Hypnogram has no server.
FREE
Full sleep tracking, and four habits to test: alcohol, exercise, room temperature, morning sunlight. Patterns across your last 90 days.
PREMIUM
Every built-in habit — caffeine cutoff, screens before bed, supplements, mouth tape, naps, late meals, and more. Custom habits you invent yourself. And patterns across your entire history, not just the last 90 days.
Monthly, or yearly with a two-week free trial.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Terms of Service: https://hypnogramsleep.com/terms
Privacy Policy: https://hypnogramsleep.com/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, JOHN ARTHUR WILLIAMS, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- JOHN ARTHUR WILLIAMS
- Size
- 51.9 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Alcohol, Tobacco, Drug Use or References
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Hypnogram Premium $34.99
- Hypnogram Premium $4.99
- Copyright
- © 2026 John Arthur Williams