LoseItFast – IF Fasting Timer

Track your fasts, see your body enter fat burning and ketosis in real time, and build a streak that sticks. No account needed. No subscriptions. Just results.

A clean fasting timer.

Pick your protocol, start the clock, and see which metabolic state your body is in as the hours pass.

Five zones — fed, early fasting, fat burning, ketosis, deep ketosis — each with a plain explanation of what's happening.

No coaching, no meal plans, no program to follow or subscribe to.

Your history, streaks, and statistics are tracked automatically for you to look back on. The app is fully offline, so data stays on your phone. No account, no subscription, no ads.

Available for iPhone.