Watch your body
turn fasting
into fuel.
Start a timer and follow your fast in real time — from glucose burning to fat burning, ketosis, and autophagy. 16:8, 18:6, 20:4, OMAD, or your own window. Free, offline, and private.
Everything You Need toFast With Confidence
A beautiful, science-backed fasting tracker that shows you exactly what's happening in your body — and keeps you motivated the whole way.
Live Fasting Timer
A beautiful circular timer for your fast.
Start your fast with one tap and watch your progress fill in real time. Pick 13:11, 16:8, 18:6, 20:4, OMAD, or build a custom window.
Fasting Stage Science
See what's happening inside your body.
Real-time stage indicators guide you from glucose burning to fat burning, ketosis, and autophagy — so every hour of your fast means something.
Weight Tracking
Log your weight and see the trend.
Record your weight and visualize your progress with clean, intuitive charts. Spot trends and celebrate milestones along the way.
Panic Mode Support
Beat cravings when they hit.
Struggling mid-fast? Open Panic Mode for guided breathing exercises, a reminder of your personal "whys," and instant support to push through.
Streaks & History
Build discipline day by day.
Every completed fast is saved to your history. Build streaks, review past sessions, and watch your consistency grow over time.
Free, Offline & Private
No account. No ads. No cloud.
All your data stays on your device. No sign-up, no subscription, no tracking. Complete privacy with full offline functionality.
Fasting inFour Simple Steps
A clean, beautiful interface that makes intermittent fasting easy to start and easy to stick with.
Pick a Protocol
Choose 16:8, 18:6, 20:4, OMAD, or a custom window. New to this? Try the 16:8 method.
Start Your Fast
Tap start and the circular timer tracks your fasting window in real time, right down to the second.
Watch Your Stages
See yourself move through fat burning, ketosis, and autophagy — with support if cravings strike.
Track Your Progress
Log your weight, build streaks, and review your fasting history to stay motivated week after week.
Got Questions?We've Got Answers
Everything you need to know about intermittent fasting and the app.
Start Your First FastToday — For Free
Download the free intermittent fasting tracker for iPhone and time your very first fast in seconds. No account, no subscription, no ads.
