Track your fasting. Boost your results.
Your personalized Smart fasting Coach that keeps you on track.
- 🔥 Burn fat smarter with AI.
- ⏱️ Track your progress automatically.
- 💬 Stay motivated with daily tips.
Your Smart Fasting Companion
Stop guessing and start progressing. Get real-time biological insights, personalized daily guidance, and the motivation you need to crush your health goals.
- 🤖 Real-time body analysis — Understand exactly what phase you’re in, from digestion to deep ketosis
- 💬 Daily motivation & check-ins — Stay on track with 5 personalized AI tips and daily encouragement.
- 🥗 Smart nutrition guidance — Discover what to eat and when, with tailored meal plans and recipes.
- ⌚ Seamless WearOS control — Check your progress, phases, and reminders right from your wrist.
- 📈 Stunning visual progress — Watch your journey unfold with beautiful animated rings and widgets.
See it in action
Two ways Ultimate Fasting fits your day — without getting in your way.
Track from your wrist
Start, stop and check your fast from any Wear OS watch.
See what you actually ate
Connect MyFitnessPal, Yazio or any Health Connect food tracker. See your real intake during the fast — deficit, surplus, or clean.
For your tradition
Four religious fasting practices, computed with astronomical and Halachic precision. Treated with the same seriousness as 16:8.
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Hindu · Ekadashi
Twice each lunar month
Astronomically computed for your location. The Vaishnava observance rule on Smartha/Vaishnava split days — cross-validated against drikpanchang.com.
- Three observance modes: Nirjala · Phalāhārī · Naktabhoji
- Hari Vasara + Paran window timings
- Food guide with permitted and avoided items
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Orthodox Christian
Year-round, four great fasts
Wednesdays, Fridays, and the four great fasts — Nativity, Great Lent, Apostles’, Dormition. Calendar aware of your tradition’s reckoning.
- Surfaces only on the days the fast is active
- Strict and dispensation modes
- Wine + oil day awareness for Great Lent
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Muslim · Ramadan
Ramadan plus voluntary fasts
Ramadan, Mondays and Thursdays, the three white days (Ayyam al-Bīḍ) — every voluntary fast tradition supports, computed to your location’s sunrise and sunset.
- Suhoor and Iftar timings precise to your geolocation
- Calculation method aware (MWL, ISNA, Umm al-Qura, others)
- Notifications for sunset breaking and pre-dawn closing
✡
Jewish · Yom Kippur
Six fasting days a year
Hebrew calendar converted to your Gregorian dates. Yom Kippur and Tisha B’Av as 25-hour observances, four minor fasts dawn-to-nightfall — with Shabbat postponement rules built in.
- Yom Kippur and Tisha B’Av — full 25-hour fasts
- Gedaliah, 10 Tevet, Esther, 17 Tammuz — minor fasts
- Hebrew + Gregorian dates side by side
All spiritual fasting features are free. No paywall on faith.
Stay Connected & Celebrate Progress
Share your achievements, track milestones, and stay motivated with friends or your fasting community. Receive gentle nudges and progress updates — even on your smartwatch.
- 📤 Share fasting progress on social media
- 🏆 Unlock milestones and badges
- 📱 Smart notifications that keep you on track
- 🔗 Syncs with Google Fit, Garmin & Samsung Health
- 💬 Join challenges and leaderboards
Why Users Love Ultimate Fasting
Smart fasting & digestion analysis
Insights, tips and personalized guidance.
Smartwatch reminders & insights
Glanceable progress on your wrist.
Motivation & daily check-ins
Stay on track with gentle nudges.
Track your progress visually
Charts, rings & clean summaries.
Personalized meal plans & recipes
Tailored to your goals and schedule.
Leaderboards & achievements
Compete, earn badges & share progress.
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Choose Your Plan
Start free and upgrade when you’re ready for more powerful features
Free
Perfect for getting started
- Basic fasting timer
- 3 pre-set fasting plans
- Weekly progress reports
- 1 AI Coach personality
- Basic notifications
- Advanced analytics & insights
- 3 AI Coach personalities
- Custom Social Media Sharing Cards
No credit card required
Pro
For serious fasting goals
- Everything in Free
- Advanced progress analytics
- Custom social media sharing cards
- 3 AI Coach personalities
- Meal planning integration
- Health Connect (Google Fit, Samsung Health, Garmin & more)
- More than 30 meal recipes
7-day money-back guarantee