Stay at Zero
Free intermittent fasting tracker
A calm intermittent fasting tracker — timer, calendar, and stats. Full core stays free.
Fasting focused
Start when you are ready
Timed goals for intermittent fasting windows, or open-ended for longer fasts. One job on screen — no meal logs, protein counters, or clutter competing for attention.
Calendar
See your year of fasts
Month grids and a year view so patterns and streaks stay visible — habit history, not only a stopwatch.
Statistics
Length, patterns, streaks
Understand when you fast and how long — without photo fatigue. Bring history with you via export/import, including from supported Zero backups.
Rich core
Full fasting app. Stays free.
Timer, calendar, stats, and guest mode are here today and stay free forever — never moved behind a paywall. Optional add-ons may appear later; daily use stays calm and focused on fasting.
- Works as guest Full use on your device — no account required.
- Your history Export and import backups so your data stays yours.
- Account & cloud sync Work in progress — coming when servers are ready. Not required to use the app.
Account sync — work in progress
Privacy-shaped
Local-first by default
Guest history stays on your device. On this site, analytics run only after you choose Accept. In the app, product analytics stay off until you allow them — and you can turn them off in Settings anytime. Read the Privacy Policy.
Open Stay at Zero
Start as a guest. No install wall — just the web app.