You don't need
another timer.
You need a coach.
StayFasted is the first fasting app that actually helps you through the hard moments — the 2 AM cravings, the mental blocks, the urge to quit. Powered by on-device AI that knows what you're feeling and knows what to say.
Every fasting app is a timer.
None of them help you at 2 AM when you're standing in front of the fridge, convincing yourself one bite won't matter.
Timers don't fight cravings
Watching a countdown doesn't stop the voice in your head. You need something that talks back.
"Great job!" isn't coaching
Generic motivation is noise. Real support means knowing what stage you're in and what your body needs right now.
The hard part isn't starting
Hour 16. Hour 36. Hour 48. That's where fasts die. That's where you need something that actually helps.
Other Fasting Apps
StayFasted
Not a tracker.
Your accountability partner.
StayFasted combines AI coaching, body-stage education, and deep Apple ecosystem integration to help you actually finish your fasts.
AI Coaching That Actually Coaches
On-device AI that responds to what you're feeling right now. Not canned motivational quotes — real, personalized, science-backed guidance that understands your fasting stage, your mood, and your why.
Know What's Happening Inside
8 fasting stages from hour 0 to 72+. See exactly what your body is doing right now — from glycogen depletion to peak autophagy — explained so you actually understand it.
Weather-Smart Suggestions
"It's 68°F and sunny. A 15-minute walk is the fastest craving killer." Real-time activity suggestions based on your weather, time, and fasting stage.
Your Why, When You Need It
During onboarding, you define why you're fasting. When the cravings hit hardest, the AI uses your own words to pull you through. Your reason. Your voice. Your strength.
Music for Every Stage
Apple Music integration with curated playlists — walking mixes to break cravings, focus sessions for deep work while fasting, meditation for the late hours.
Check-ins That Matter
Log your mood, energy, and cravings. The AI responds to each one personally — adjusting its coaching to how you're actually doing, not a script.
Progress You Can See
Weight trends, mood patterns, streak tracking, and calorie logs — synced with Apple Health. See the compound effect of every fast you finish.
What's happening
inside your body
Your body goes through 8 distinct stages during a fast. StayFasted teaches you each one in real time — so you know exactly why you feel what you feel.
Fed State
Your body is digesting and absorbing nutrients. Blood sugar rises, insulin is active. Energy is readily available from your last meal.
Normal digestionEarly Fasting
Insulin drops. Your body begins tapping into glycogen stores in the liver. Blood sugar stabilizes. The first cravings appear — this is your brain asking for easy fuel.
Glycogen burningMetabolic Switch
Glycogen is depleted. Your body begins converting fat into ketones for fuel. Mental clarity often increases. This is the breakthrough most people quit before reaching.
Entering ketosisDeep Ketosis
Full fat-burning mode. Growth hormone increases up to 5x. Your body becomes incredibly efficient at using stored energy. Many people report feeling euphoric.
Peak fat burningAutophagy Begins
Your cells begin recycling damaged components — literally cleaning house. This is the cellular repair process that researchers believe may slow aging and fight disease.
Cellular cleanupDeep Autophagy & Immune Reset
Peak autophagy. Old immune cells are broken down and recycled. Stem cell production increases. Your body is rebuilding from the inside out. This is where the deep healing happens.
Immune regenerationYour data stays
on your device.
StayFasted runs entirely on your iPhone. Your health data, your fasting history, your AI conversations — nothing leaves your phone. Ever.
100% On-Device AI
Your coaching conversations never leave your iPhone. No cloud processing, no data collection, no compromises.
Deep Apple Integration
Apple Health, Apple Music, Apple Watch — StayFasted is built for the Apple ecosystem from day one.
Built by a Faster
Created by someone who's done 72-hour fasts and knows the difference between an app that tracks and one that helps.
"I built StayFasted because I kept breaking my fasts at 2 AM. Not because I was hungry — because I was alone with my thoughts and no app could help. I needed a coach, not a countdown. If you've been there, this app is for you."
Free. Seriously.
Early access members get full access to every feature, free. When we launch pricing, it'll be a fraction of what other apps charge.
*Free for all early access members. Future pricing planned at ~$2.99/mo.
- AI coaching — unlimited conversations
- 8 fasting stages with real-time education
- Apple Health, Music & Watch integration
- Weather-aware activity suggestions
- Progress charts & streak tracking
- Your Why Profile & hourly check-ins
Your next fast doesn't
have to be alone.
Whether it's your first 16-hour fast or your tenth 72-hour fast — StayFasted is the partner that stays with you through every hard moment. Because the hardest part of fasting was never the food. It was doing it alone.
Stay with it.