Simple fasting windows
Choose 12:12, 14:10, 16:8, or 18:6. The timer shows elapsed time, remaining time, eating window, and planned end time.
00 app store
quiet fasting tracker.
fast helps you run simple intermittent fasting windows, end early without guilt, and see the pattern afterward. It is made for general wellness, not streak pressure.
01 rhythm
clear timer, quiet checks.
The app keeps the core flow small: pick a fasting window, start when ready, and log only the context that helps you notice patterns.
Reminders without noise
Opt into start, completion, eating-window, and check-in reminders. Turn any reminder off later from settings.
History and check-ins
See completed fasts, skipped days, and optional notes about hunger, energy, mood, and symptoms.
iPhone-native surfaces
Live Activity and lock-screen widgets keep the active fast visible without opening the app.
Optional Apple Health
If you enable it, fast can log completed fasts to Apple Health and read body weight for a local trend card.
02 privacy
local-first by default.
fast does not require an account and does not send your fasting history to a server. Your data stays on your device unless you choose to share it through iOS or Apple Health.
No accountsNo login, profile, or cloud sync.
No analyticsNo behavior tracking SDKs.
No adsNo ad networks or tracking.
No subscriptionsNo recurring paid plan.
No server-side data collectionNo app backend receives your fasting data.
Apple Health is optionalYou control access through iOS permissions.
03 note
wellness, not medical advice.
Listen to your body
End a fast if you feel weak, dizzy, or unwell. Consult a qualified healthcare professional before fasting if you have a medical condition, are pregnant, have a history of disordered eating, or are unsure whether fasting is appropriate for you.