Zimple Fasting Tracker

Set your goal, start your fast, and get notified the moment you hit it. Track streaks, review history, and learn the science behind intermittent fasting.

Zimple Fasting Tracker is the Zimplest way to track your intermittent fasting windows. Start a fast with one tap, watch your progress in real time, and get notified the moment you hit your goal.

Beautiful, distraction-free timer
A clean progress ring shows exactly how far into your fast you are — and which metabolic phase you're in right now.

Built-in fasting protocols Choose from the most popular fasting windows — 12:12, 16:8, 18:6, 20:4, and OMAD — or dial in a fully custom duration from 1 to 72 hours.

Phase-by-phase insights As your fast progresses, the app tracks each metabolic phase — from early fat burning to ketosis and autophagy — so you always know what's happening in your body.

Full history & streaks Every fast is logged automatically. View summaries by week, month, or year, and track your current and longest streaks.

Smart notifications Get notified when you hit your goal and at key metabolic milestones — so you never have to keep checking the clock.

Export your data Download your full fasting history as a CSV anytime.

Fasting Tracker is not a medical app. Always consult a healthcare professional before beginning any fasting protocol.