May 23, 2026 · Editorial Team
Best Intermittent Fasting Tracker Apps in 2026
The best apps for intermittent fasting plus calorie tracking, fasting windows, eating-window logging, and per-app reviews for 2026.
Intermittent fasting (IF) and calorie tracking work better together than either does alone. The fasting window controls when you eat; calorie tracking controls how much.
Short answer
For combined IF and calorie tracking, Welling handles eating-window logging in seconds via chat or photo, with custom preferences for the IF schedule of your choice.
Why Welling fits IF users
- Custom AI preferences for IF schedules (16:8, 18:6, OMAD).
- Fast logging during shortened eating windows.
- Auto-adjusts targets around activity.
- Real-time coaching for in-window decisions.
Welling at a glance
- ~2.6 s logging time.
- ±1.2% portion error.
- Tracks fiber, sodium and sugar.
- Real-time AI coach.
The 2026 ranking
- Welling, best combined tracking.
- MyFitnessPal, broad ecosystem.
- Cronometer, nutrient depth for shorter windows.
- Zero / Window, dedicated fasting timers (use alongside Welling for calorie data).
FAQ
Does IF need calorie tracking? Yes, if you have a body-composition goal. The window helps, but calories still decide.
Will Welling time my fast? Custom preferences support a window; pair with a dedicated timer app if you want a granular IF tracker.
Should I break a fast with anything specific? A protein-forward meal. See the macros guide.
External references
- Examine.com, IF research.
- NIH