The fasting app
you buy once.
FastWise turns intermittent fasting into visible progress — a projected goal date, a daily consistency score, and monthly transformation reports. Private by design: no account, no ads, no tracking.
Buy once, keep it for life
A one-time Lifetime purchase is the point. Subscriptions exist, but they're optional — never forced.
Private by design
No account, no ads, no tracking. Your data stays on your device and your own iCloud.
More than a timer
Goal-date projection, daily consistency score, monthly reports, and a Lock Screen Live Activity.
Progress you can actually see
From your first week, FastWise projects when you'll reach your goal — and shows you, every day, whether you're on track.
Everything in one calm scroll
Fasting timer + Lock Screen
Start, end, and edit fasts. Follow your fast right from the Lock Screen with Live Activities.
Goal-date projection
30- and 90-day forecasts that update every time you weigh in.
Daily consistency score
A 0–100 score built from completion rate, streaks, frequency, and routine.
Monthly transformation reports
Total fasting hours, weight lost, best week — one shareable card per month.
Water, weight, meals & exercise
Log everything in one place, with body progress photos kept private on your device.
Understand each fasting stage
See what's happening in your body hour by hour, with encouragement that adapts to you.
Your fasting data is nobody's business.
FastWise has no server collecting your data. Optional AI features run on-device with Apple Intelligence, or with your own key — nothing is sent to us, ever.
Fair pricing, your choice
Try everything free for 5 days — no payment, no card. Then keep Pro your way.
Subscriptions renew unless cancelled 24h before the period ends. Manage anytime in App Store settings.