Fasting, simply.
A beautiful intermittent fasting tracker for iPhone — with Live Activities, a fasting-stage timeline, and zero tracking.
Coming soon to the App Store Designed for iPhone — iOS 26 and later.What it does
Everything you need to fast intentionally — and nothing you don't.
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Fasting & eating window tracker
Start a fast in one tap. The eating window flows in automatically once you finish.
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Live Activity & Dynamic Island
Your timer keeps ticking on the lock screen and in the Dynamic Island, in real time.
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Fasting-stage timeline
See where you are: Fed, Early Fasting, Metabolic Switch, Enhanced Fat Burning, Ketosis & Autophagy, Deep Ketosis.
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FreeStyle or goal-based
Track without a target, or pick a schedule like 16:8. Switch any time.
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Insights, history, trends
Look back over your fasts and spot the patterns that work for you.
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Light & dark mode
Tuned for both — with the same warmth as the app's adaptive palette.
Your data never leaves your phone.
Fasting is built around a simple promise: it's just you and your iPhone. Everything you log is stored locally via Apple's SwiftData, in your app's private sandbox.
- No accounts, no sign-in.
- No analytics, no tracking, no advertising SDKs.
- No third-party services. No servers we own. Nothing leaves the device.
- Live Activities run on-device through Apple's ActivityKit — no push server.