iFast - Simple Fast Tracker

Simple fast tracker helps you track your fasts, your progress, and your goals. Start your Timer and stay on target with all popular fasting types, including:


• 13-HOUR FAST, based on research by Dr. Satchin Panda (Salk Institute), this 13-hour or “circadian rhythm fast” aligns your eating window with your body’s clock.

• 16-HOUR FAST, or the 16:8 intermittent fast, used by celebrities, athletes, and millions of Zero Members to manage weight and improve metabolic wellbeing.

• 18-HOUR FAST, or 18:6, for more advanced fasters.

• Other popular fasts include OMAD (one meal a day), the 20:4 fast, and custom prolonged fasts up to 7 days.