
PureFast: Intermittent Fasting
Fasting Timer & Biohacking
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Free
In-App Purchases
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About
PureFast is the intermittent fasting timer for people who want more than a stopwatch. It's a metabolic-health companion with biohacking tools no other fasting app puts in one place.
SMART FASTING TIMER
Start 16:8, 18:6, 20:4, OMAD, or a fully custom fast, and watch your body move through the zones: Fat Burning, Ketosis, Deep Ketosis, Autophagy. Smart notifications keep you on track without nagging you.
BIOHACKING SUITE
• Cold-exposure timer — stack cold with your fast
• Caffeine tracking — time your coffee so it supports the fast
• HRV and circadian insights via Apple Health sync
• Metabolic flexibility score that improves as you do
STAY CONSISTENT
Achievements, streaks, and level-ups turn fasting into a game you'll actually keep playing. Hydration tracking included.
PRICING
PureFast is free to download, with every feature unlocked for your first 30 days. After that, continued access requires a subscription: $1.99/month or $19.99/year. Cancel anytime.
SUBSCRIPTION TERMS
• Payment is charged to your Apple ID account at confirmation of purchase
• Subscription automatically renews unless cancelled at least 24 hours before the end of the current period
• Manage or cancel anytime in Settings → Apple ID → Subscriptions
• Terms of Service: https://utlityapps.github.io/purefast-legal/terms.html
• Privacy Policy: https://utlityapps.github.io/purefast-legal/privacy.html
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What's New in PureFast
1.0.2
September 21, 2026
This update corrects the subscription details shown on the store listing, refreshes the app description, improves how your trial period is tracked, and includes bug fixes and performance improvements.
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Subscriptions & In-App Purchases
Premium Yearly
Unlock all PureFast features with yearly billing
$19.991 Year
1 Month trial








