@youFAST

youFAST — Intermittent Fasting

Meet Ember, your personal AI fasting companion. youFAST makes intermittent fasting simple, smart, and motivating — whether you're just starting out or chasing your longest streak.

EMBER AI COACH Ask Ember anything about fasting, nutrition, or your progress and get personalized answers instantly. Powered by Claude AI, Ember knows your streak, protocol, and readiness score to give you smarter coaching. Free users get 3 questions per day — Pro users get unlimited access.

FASTING TIMER Start your fast with one tap. Watch Ember's ring fill as you move through scientifically-backed fasting phases — from Fed State all the way to Deep Fasting. Tap the ring to flip between elapsed time and time remaining.

TRACK EVERYTHING THAT MATTERS • Body — weight charts, measurements, Waist-to-Height ratio • Fitness — steps, resting heart rate, VO2 max, workouts (Apple Health) • Nutrition — search 600,000+ USDA foods, scan barcodes, log meals by type • Sleep — nightly sleep quality from Apple Watch or Health app • Hydration — daily water intake tracking

SNAP & TRACK Snap a photo of your meal and Ember identifies what's on your plate using Claude AI vision — automatically filling in calories, protein, carbs, and fat. No typing required. Includes a confidence score and lets you add hidden toppings or sauces after the scan.

youFAST SCORE Your personalized 0-100 daily readiness score. Six signals — sleep, fasting, hydration, steps, heart rate, and streak — combine into one number that tells you how locked in you really are.

ACHIEVEMENTS & CELEBRATIONS Earn badges for fasting milestones, streaks, weight goals, and step counts. Full-screen celebrations fire the moment you earn them. Share your progress and get cheers from friends.

APPLE WATCH Glanceable fasting ring, live timer, and phase label on your wrist. Start and stop fasts directly from your watch — syncs instantly to your iPhone. Add a watch face complication for an always-on view.

WIDGETS Six Home Screen and Lock Screen widgets keep your fast visible without opening the app. Tap the widget button to start or stop a fast instantly.

youFAST PRO Unlock Ember AI Coach (unlimited), Snap & Track meal photo analysis, nutrition tracking, premium themes, and advanced insights.

youFAST is free to download. Pro features available via subscription.

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