Want to manage intermittent fasting scientifically? FastingKit offers 16 fasting protocols from 12:12 to OMAD, real-time progress and body stage tracking, weight and water logging, habit insights, and an achievement system — making fasting simple and fun.
Science-based intermittent fasting management, helping you reach your health goals
From beginner-friendly 12:12 to challenging 60-hour extended fasts — 16 protocols to choose from. Includes popular options like 16:8, 18:6, 20:4 (Warrior Diet), OMAD (One Meal a Day), plus fully custom plans. You can even schedule a weekly plan by weekday — 16:8 on workdays, rest on weekends — and set your fasting rhythm for the whole week in one tap.
FastingKit shows your current fasting stage in real time — from glycogen depletion to fat burning to autophagy activation. Each stage includes scientific explanations and visual progress indicators. Your exclusive panda companion fasts along with you on the home screen, waking up and brightening through 6 states as your fast progresses — every step of progress is worth celebrating.
Multiple categories of achievements to unlock — from consecutive fasting days to cumulative fasting hours. Every step of progress is worth celebrating. Achievement unlocks come with celebration animations, keeping your fasting journey motivating and rewarding.
Log every weight change and automatically generate trend charts. The Habits page adds four health cards — BMI, sleep, heart rate variability, and steps — analyzed together with your fasting data, so you can clearly see how fasting affects your body. Weight and water data sync both ways with Apple Health, keeping all your health data in one place.
Staying hydrated is a consensus recommendation for every fasting plan. One tap to log water from the home screen, with automatic daily totals, goal days, and weekly/monthly/yearly trends. Water data syncs both ways with Apple Health, and you can log it right from your wrist with Apple Watch — hydration becomes as easy as fasting itself.
FastingKit fully supports iPhone, iPad, Apple Watch, and Mac. The Mac menu bar dynamically shows your fasting progress. Apple Watch has an independent app + watch face complications — raise your wrist to check progress, and even log water and weight right from your watch. Multi-device data syncs in real time via iCloud, so you can continue tracking on any device.
Customize fasting start and end reminders, with five notification tone styles to choose from — from gentle encouragement to full-on cheerleading, every reminder feels like a friend cheering you on. Supports Live Activity with Dynamic Island — your fasting progress is visible at a glance on the lock screen. Siri shortcuts let you start or end a fast with just your voice.
Every fast is fully saved and grouped by event — even multi-day fasts show their complete duration. Tap any day's bar to see the fasting vs. eating time ratio. The Habits page provides a habit score and monthly heatmap to spot your patterns at a glance. Supports CSV and JSON data export for in-depth analysis.
No need to pull out your phone — just raise your wrist to check fasting progress, current stage, and remaining time. You can start or end a fast, and log daily water and weight, right from your wrist. The Apple Watch app syncs in real time with iPhone, keeping fasting records and achievements perfectly in sync.
FastingKit is a universal app that runs perfectly on iPhone, iPad, Mac, and Apple Watch, with data syncing automatically via iCloud
Start your science-based fasting journey — take control of your health today
FastingKit provides comprehensive support for your science-based fasting journey
14 beautiful theme color schemes with dark/light/system-follow modes. Each theme is carefully designed to give your app a fresh look every day.
Multiple home screen and lock screen widgets (small/medium/large sizes) — check your fasting progress without opening the app. Place your fasting status where it's most convenient to see.
Automatically sync data across all your devices via iCloud. Start a fast on your iPhone and instantly see it on your iPad and Mac — no manual action needed.
Deep integration with Apple Health — two-way sync of fasting records, weight, and water data. Keep all your health data unified, integrating fasting data into your complete health profile.
Supports Dynamic Island and lock screen Live Activity — your fasting progress displays in real time at the top of the screen. See your current fasting status and remaining time without opening the app.
Supports 24 languages — no matter what language you use, FastingKit presents the interface in your familiar language. Users worldwide can easily enjoy smart fasting tracking.
Stay hydrated while fasting. One tap to log water from the home screen, with automatic daily totals and goal days — trends at a glance, synced both ways with Apple Health.
Schedule your week by weekday: 16:8 on workdays, rest on weekends, or any combination. Your daily plan is pre-selected automatically, keeping your fasting rhythm on track.
Export fasting, weight, and water records as CSV or JSON with one tap. Your data stays entirely yours — perfect for backups or deeper personal analysis.
FastingKit offers flexible purchase options to unlock all premium features
One-time purchase, permanently unlock all premium features, no renewal required. Supports Family Sharing.
Auto-renewable yearly subscription with full premium features. Includes 3-day free trial. Supports Family Sharing.
Auto-renewable monthly subscription, flexible choice. Includes 3-day free trial. Supports Family Sharing.
Payment will be charged directly to your iTunes account. Subscriptions auto-renew unless you turn off auto-renewal at least 24 hours before the end of the current period. You can manage or cancel your subscriptions in your iTunes account settings at any time after purchase.
Have questions or suggestions? We'd love to hear from you
710641131
Settings → Help & Feedback → Contact us via email
