Zero is a countdown clock that grew a nutrition layer. Useful if a visible timer keeps you honest. Useless if you already eat in a window and do not need a streak.
Meditation & apps
Limited evidence
Zero
Fasting timer with protein tracking and a large habit community.
How to use
Set a 13–16 hour window. Track protein when you eat. Skip multi-day fasts unless a clinician is in the loop.
Details
- Platforms
- iOS, Android
- Subscription model
- Freemium
- Key features
- Fasting timer, Protein tracking, Fasting zones
- Guidance
- Both
- Focus areas
- Focus
Editorial rating ★ 4.1
Best-known fasting timer. The science lives in the window, not the badge.
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