Intermittent vs FastRing

The intermittent fasting tracker that shows the biology happening inside you in real time: Fed, Lipolysis, Ketosis, Autophagy. Ad free fasting app. No account required. Most fasting apps give you a countdown clock and a streak to protect. Intermittent does something different. It shows you exactly which biological phase your body is in right now, and explains the science behind it with cited primary sources, not marketing copy. If you have ever wondered how to track fasting properly, or what is actually happening during a fast, this is the fasting tracker built for that question. WHY FASTING WORKS Intermittent fasting works because of what happens between meals, not just the absence of food. As your fast progresses, your body moves through distinct phases: burning through glucose reserves, shifting into fat burning lipolysis, entering ketosis, and eventually triggering autophagy, the cellular repair process linked to longevity and metabolic health. Understanding these transitions is what separates intentional fasting from guesswork. Intermittent maps every stage so your goals are grounded in biology, not motivation. KEY FEATURES PHASE AWARE FASTING TIMER A real time timer that tracks six biological phases: Fed, Early Fasting, Lipolysis, Ketosis, Autophagy, and Deep Fast. Each phase links to a free science article with primary sources cited. EVERY FASTING PROTOCOL, ONE APP Supports 12:12, 14:10, 16:8, 18:6, 20:4, OMAD (One Meal A Day), 36 hour, 48 hour, and 72 hour fasts. FREE FASTING SCIENCE LIBRARY A full library of fasting articles covering intermittent fasting, ketosis, autophagy, insulin response, and more. No subscription. No account. No paywall. SMART HYDRATION TARGET A science backed hydration goal that adapts to your weight, sex, age, and fasting duration. WEIGHT AND PROGRESS TRACKING Log your weight after each fast and track trends over time. Includes streak heatmap, phase reach history, and estimated fat vs glucose energy usage. PRIVATE CIRCLE AND END OF FAST REFLECTION Share your fast with a small private group. Applause only responses. No comparison. No gamification. HOME SCREEN WIDGET AND CROSS DEVICE SYNC Keep your fasting timer visible with a home screen widget. Your data syncs across devices privately without third party trackers. WHO IT IS FOR Intermittent is built for adults who want to understand fasting, not be coached through it. If you follow research on metabolic health, read about longevity, or want a fasting routine grounded in biology rather than points or streaks, this app is for you. Suitable for both beginners and experienced fasters. HOW IT WORKS Choose your fasting protocol, from 12:12 to extended fasts Start your timer and track your biological phase in real time Tap any phase to read the science and log your reflection at the end No account required to start. No subscription required to access the library.

FastRing is the intermittent fasting timer for people who want to fast, not fiddle. One screen. One button. A single beautiful ring that fills as your fast progresses — and lives right on your Lock Screen and Dynamic Island, so most days you never even open the app. Dead simple Pick a protocol, tap Start. That's it. The ring shows elapsed time, your goal, and the fasting stage you're in. End your fast from the Lock Screen without unlocking your phone. Presets for every style 16:8, 18:6, 20:4, OMAD (23:1), 36-hour, or any custom length. Started earlier? Backdate it in two taps. The Lock Screen is the app A Live Activity and Dynamic Island keep your ring, elapsed time, and current stage in front of you — through fasts as long as 36 hours, with no notifications spam. See your streak build A GitHub-style history heatmap, current and longest streaks, and your 7-day average. Watch the grid fill in. Fasting stages, clearly explained Gentle, optional notes as you move through commonly cited milestones — blood sugar settling, glycogen depletion, ketosis, the autophagy window. Framed as commonly cited timelines, not medical advice. Recurring schedules Set protocols like "Every Tuesday" and FastRing pre-arms the fast and reminds you an hour before. Privacy is the whole point No account. No sign-up. No analytics. No third-party anything. Your data lives on your device and syncs only through your own private iCloud. We literally cannot see it. Free forever The full timer, every preset, and your last 7 days of history are free, always. Lifetime Unlock — one purchase, $4.99, yours for good: Unlimited history Recurring schedules Home Screen & Lock Screen widgets Stage notifications CSV / JSON export No subscription. No trial that flips into a charge. Pay once, keep it forever. FastRing is not a medical device and does not provide medical advice. Consult a healthcare professional before beginning any fasting regimen, especially if you are pregnant, nursing, diabetic, or have a history of disordered eating.