Your AI-powered
health companion.
Track intermittent fasting, exercise and nutrition. Get personalised AI coaching, earn XP and forge your path to better health — even while building a company at pace.
Talk to us about FastForgeCore features
Everything you track, in one place.
Fasting tracker
A live timer with a progress ring, 16 fasting phases from 0 to 120 hours, and a celebration when you finish.
Exercise logging
Log 8 activity types, including strength, cardio, HIIT, yoga, walking, swimming and cycling.
AI coach
Chat with an AI coach, powered by Claude, that knows your data: weekly reviews, meal suggestions and exercise advice.
Hydration
Quick-add water with a daily target based on your activity level — essential during longer fasts.
Gamification
Earn XP for every action, level up through 7 ranks, build streaks and compete on the leaderboard.
Fasting resources
A curated video library and a complete drinks guide for fasting days.
Fasting schedules
Pick a rhythm, or make your own.
Six built-in schedules, or a custom protocol from 1 hour to 14 days.
How it works
Four steps to a steadier routine.
Set up your profile
Add your age bracket, goals and activity level, and switch on only the features you use so the coach adapts to you.
Choose a fasting schedule
Get a preparation guide for your fast, with recommended videos and drink tips.
Track your journey
Log fasts, workouts, water and meals, and watch each phase progress with motivating messages from the coach.
Level up
Earn XP, build streaks, complete weekly challenges and climb the leaderboard.
An AI coach that uses your data
Powered by Claude, the coach bases its advice on your own tracking data, respects your preferences and only advises on the features you actually use.
Gamification
Progress you can see.
XP & levels
Fast +100, exercise +30, water +5. Seven ranks to climb.
Streak flames
Flame visuals that grow from day 1 to 30+ day streaks.
Weekly challenges
Two rotating challenges each week, with progress bars and XP.
Leaderboard
Anonymous community ranking, with your percentile.
Fasting drinks guide
Know what to drink.
Privacy & preferences
Private by design
Your data stays scoped to your account, isolated from other users and not shared.
Your way
Turn off what you don't use — water, meals, exercise, supplements or weight — and the coach adapts.
FastForge is a tracking and coaching tool, not medical advice. Speak to a doctor before trying extended fasts, especially if you have a health condition, are pregnant or take medication.