# Fortuity Sleep

> A sleep tracker for iPhone, iPad and Apple Watch that explains last night in one plain sentence, compares it with your own last 30 nights, and gives you one thing to do tonight. From Epiphani Studios, part of the Fortuity family. $24.99, paid once, with no subscription; free while it installs through Apple's TestFlight.

Last updated: 2026-10-04

- [Home](https://fortuitysleep.com/): what it does, with examples of each verdict
- [Capabilities](https://fortuitysleep.com/capabilities/): every feature, the mechanism behind it, and how to verify it
- [Compare](https://fortuitysleep.com/compare/): side by side with AutoSleep and Sleep Cycle, quoted from their App Store pages
- [Privacy](https://fortuitysleep.com/privacy/)

Key facts: reads Apple Health (read-only); last night chosen by session clustering; one recorder per night when several apps write the same night; stages without data read "not recorded" instead of zero; personal norm from your last 30 nights after 7; the morning sentence is written by Apple's on-device Foundation Models from a rule-decided verdict and rejected if it adds a number or a diagnosis; Apple Watch app reads the night on the watch.