Every fast, every stage, in one beautifully simple timer. No ads, no upsells in your face, no data leaving your phone.
Free, with an optional Pro tier.
Every screen designed with the same care. Smooth, considered, made to disappear into your day.
A stage-aware ring showing exactly where your body is — elapsed time, current stage, and what comes next.
Six built-in schedules from 13:11 to 72 hours, plus custom protocols with Pro.
Weekly bars and your full history, free — with a 12-week heatmap on Pro.
Not another habit tracker pretending to be a fasting app. Built from the ground up for intermittent fasters who want clarity, not noise.
Watch yourself move through anabolic, catabolic, fat burning, ketosis and beyond — the ring shows exactly where you are.
iOS Live Activity and home-screen widgets show your current hour without ever opening the app. Android widget too.
Log fasts, weights, moods. Trend lines, weekly bars, and gentle streak tracking — never guilt-tripping you.
Your fasts and weights live on your phone. No ads, no cross-app tracking — just optional anonymous analytics you can switch off anytime.
Free forever for everything that matters. Pro adds extras with monthly, annual, or one-time lifetime pricing — no ads, no upsells in your face.
Built to feel like Apple Health and Things 3 — typography, motion, haptics, all considered. Just a joy to use.
Fasting isn't a single state — it's a sequence of physiological shifts. The app shows where you are right now, and what's next.
Your body is soaking up fuel from your last meal. Insulin tells your cells to store the sugar — some as glycogen, the rest as fat.
Insulin eases off and your liver spends its stored sugar, feeding a steady drip of glucose to your brain and muscles.
Stored sugar is nearly spent, so your body pulls from fat instead. Ketones start rising — many people notice steadier energy and a sharper head.
Your brain and heart run mostly on ketones, and cellular clean-up (autophagy) speeds up. Hunger usually quiets down.
Autophagy hits its stride, growth hormone climbs, and background inflammation tends to settle.
A deep cellular reset, fully running on fat and ketones — best done with experience and a coach or doctor in the loop.
Times are approximate and vary by person, meal composition, activity, and fasting history.
Yes — the timer, journal, stages, charts, achievements, and Health Connect / HealthKit integration are all free. An optional Pro tier unlocks advanced analytics and unlimited custom plans, but the core experience stays free forever.
We're a more focused, privacy-first app: your fasts and weights stay on your phone, there's no aggressive paywall, and the whole experience is built to feel considered rather than gamified. On iOS you also get Live Activities and home-screen widgets.
Completely. The app reads and writes to your device only. Optional anonymous usage analytics can be turned off in Settings.
No. Fasts, weights, and notes never leave your phone. We use PostHog for anonymous, aggregate product analytics (which you can disable). Read the full privacy policy below.
Yes. Weight syncs from Apple Health (iOS) and Health Connect (Android). On iOS, completed fasts can optionally be written as Mindful Minutes.
iPhone (iOS 16.2+) and Android (Android 8+), with the same core experience on both. Home-screen widgets are available on both platforms; Live Activities (the Dynamic Island and lock-screen timer) are iOS-only, since Android has no equivalent.
Download Fasting Well and feel the difference a thoughtfully designed timer makes.