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New: A fresh look for Circle. Your words come first, with how far each fast went and a clap to cheer friends on. New: Insights shows how often you finish each fast length, and explains what consistency counts. New: Find every fasting plan from the timer with "All protocols". Improved: A simpler bottom bar, a quicker start, a smoother timer, and articles that open instantly. Fixed: Several crashes. Consistency now counts every fast you do, and your notes and stats stay right.
Autophagy & ketosis stage guide for extended fasts: 36 and 72 hours, no ads
Intermittent is a fasting timer that shows you what the countdown is doing to your body. Where most clocks stop at the minutes, this intermittent fasting app maps six biological stages in real time — and explains each one with cited primary sources. If you have ever wondered what a 16:8 fasting window actually triggers inside you, this is where the answer lives. WHY FASTING WORKS Intermittent fasting works because of what happens between meals. As the hours pass, your body burns through glucose, shifts into fat-burning lipolysis, enters ketosis, and eventually ramps up autophagy — the cellular repair process linked to longevity and metabolic health. Knowing which of the fasting stages you are in is what separates intentional fasting from guesswork. KEY FEATURES ★ PHASE-AWARE TIMER A fasting countdown timer that tracks Fed, Early Fast, Lipolysis, Ketosis, Autophagy, and Deep Fast in real time. It is an autophagy timer that tells you when cellular repair most likely begins — and a fasting timer that explains the why behind every phase, with sources cited inline. ★ EVERY PROTOCOL, ONE SCHEDULE 12:12, 14:10, 16:8, 18:6, 20:4, OMAD, and long extended fasts — every schedule lives here. Set any intermittent fasting schedule and change it for a single fast without disturbing your plan. Whether you keep intermittent fasting 16:8 as your steady rhythm, push into 18:6 fasting, or want an OMAD app for one-meal days, the plan follows you. Start on 16/8 and step up when your body is ready. ★ GO LONG An extended fasting app built for the long ones: a 72 hour fasting timer with hour-by-hour stage notes, so 72h fasts and multi-day protocols stay legible from the first hour to the last. ★ SCIENCE LIBRARY, NO PAYWALL A full library of cited articles on ketosis, insulin response, and cellular repair — the reading that makes this a ketosis fasting app and an autophagy tracker, not just a clock. No subscription, no account, no paywall. ★ HYDRATION AND PROGRESS A hydration target that adapts to your body and the length of your fast. Log your weight, watch the trend, and read a fasting hours tracker with a streak heatmap and a fat-versus-glucose energy split per fast — the honest progress side of a fasting weight loss app, without the shaming. ★ PRIVATE CIRCLE Intermittent fasting circles, done gently: share a fast with a small private group, applause-only responses, no leaderboards, no comparison. End each fast with a mood check-in and notes. ★ HOME SCREEN WIDGET A fasting widget for your Android home screen — a timer widget and tracker widget in one, so your countdown stays visible without opening the app. NO ADS, NO GUILT This fasting diet app is free of ads, accounts, subscriptions, and guilt mechanics. Fasting, no ads attached, no third-party trackers, and your data stays on your devices except the private sync you choose. WHO IT IS FOR Built for adults who want to understand fasting rather than be coached through it. A simple fasting tracker and a serious one at the same time: pick a fasting plan, start the clock, and watch the biology unfold. If your goal is to lose weight, fasting with real feedback beats fasting with guesswork — and this fasting monitor shows you the difference, hour by hour, in your own body.