Fasting Duo: Intermittent Fast

Fasting Duo makes intermittent fasting simple. Choose a protocol, start your timer, and track every session — all in one clean, easy-to-use app. GET STARTED IN SECONDS Pick from popular fasting protocols like 12:12, 16:8, 18:6, and 20:4, or set a custom duration that fits your schedule. Tap once to start your fast and watch the countdown timer in real time. TRACK EVERY FAST The circular countdown timer shows exactly how much time remains. When your fasting window ends, the session is automatically completed. Need to stop early? End your fast at any time and the actual duration is saved. SEE YOUR PROGRESS View your fasting history on a weekly calendar. Every session is logged with protocol, start time, end time, and duration so you can look back and see how consistent you have been. DETAILED STATISTICS Monitor total fasting hours, average fast duration, fasted days, successful and incomplete sessions, and your overall success ratio. Weekly and all-time stats give you the full picture. STAY MOTIVATED WITH STREAKS Daily and weekly streaks reward your consistency. See your longest fast, current daily streak, and weekly streak at a glance. The more you show up, the longer your streak grows. OPTIONAL LEADERBOARD Compare your completed fasting hours with other users on the leaderboard. See where you rank and get an extra push from the community. Prefer to fast solo? The leaderboard is entirely optional. PERSONALIZED ONBOARDING Optionally enter your height and weight to see your BMI summary. Select goals like weight management, improved focus, metabolic health, or building a routine. Skip any step you like — the app adapts to you. YOUR DATA, YOUR CONTROL Create an account to sync across devices, or continue as a guest with all data stored locally on your phone. Switch to an account anytime without losing progress. You can view, update, or permanently delete your account and data at any time. FEATURES AT A GLANCE — Protocols: 12:12, 16:8, 18:6, 20:4, and custom duration — Circular countdown timer with real-time progress — Weekly calendar with session history — Comprehensive stats: hours, days, streaks, success ratio — Daily and weekly streak tracking — Optional community leaderboard — Guest mode or account with cross-device sync — Height, weight, and BMI summary — Goal selection for personalized experience — Suggest new features directly from the app — Privacy policy accessible in-app — Full account and data deletion Fasting Duo is a personal fasting tracker designed to help you build and maintain an intermittent fasting habit. It is not a medical device and does not provide medical advice, diagnosis, or treatment. Download Fasting Duo and start your first fast today.