Fast smarter.
Live better.
Adaptive reminders, AI coaching, and community challenges—everything you need to stay on track across every device.
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Built for disciplined, data-backed fasting
Adaptive timers & reminders
Intelligent presets with OpenAI imagery, adaptive reminder windows, and Firebase Cloud Functions keep every fast synced across devices.
AI Coach & pattern insights
The AI Coach stores context in Firestore, caches responses, and surfaces GPT-powered insights that learn your fasting and hydration patterns.
Community & accountability
Join private groups, launch challenges, and climb leaderboards—powered by secure Firestore rules with local-first fallback.
Why Fastmode?
Unlike other fasting apps, Fastmode blends minimalist UI with deep automation—adaptive reminders, cross-device notification sync, and weekly Cloud Function summaries that keep you engaged without the noise.
- Minimalist, calm design—no ads, no clutter, always-on local storage
- AI-powered insights that adapt to your fasting and hydration rhythms
- Deep Apple ecosystem roadmap—Live Activities, widgets, Siri, and Dynamic Island
- Native Cloud Functions automate analytics, reminders, and summaries behind the scenes
- Custom OpenAI imagery keeps every preset and insight visually unique
Free Forever
Full timer, standard presets, history tracking, and basic streaks—all free.
Fastmode Pro
AI coach, smart analytics, widgets, HealthKit, and more.
$4.99/month or $39.99/year
Try Our Free Fasting Calculator
Track your fasting hours in real-time, calculate eating windows, and plan your intermittent fasting schedule. No account required.
Open CalculatorReady to start your fasting journey?
Download Fastmode today and experience the calmest, smartest fasting companion on iOS.
Download on the App Store