We usually reply within 1–2 business days.
Need help, found a bug, or have a feature request? We'd love to hear from you.
No. Open the App and start your first fast right away. Your fasts, streaks, weight and settings are stored on your device — no sign‑up required.
Pick a fasting window (for example 16:8 or 18:6) and tap Start. Fastwell counts your fasting time and shows which fasting stage you're in — glycogen depletion, fat burning, ketosis and autophagy — right on the timer, and on the Live Activity / Dynamic Island so you can follow along without opening the App.
The core timer, the 16:8 / 18:6 windows, history, streaks and Live Activity are free forever. Fastwell Premium unlocks longer and custom windows, deeper stage insights, weight trends and more.
Subscriptions are managed through your Apple Account, not inside the App. On your iPhone open Settings → [your name] → Subscriptions, select Fastwell Premium, and change or cancel your plan. If you cancel, you keep access until the end of the current billing period.
Open the paywall in the App and tap Restore. Make sure you're signed in with the same Apple Account you used for the purchase.
Yes — optionally. If you enable Apple Health in Settings, your weight entries stay in sync with the Health app. You can turn this off any time in iOS Settings → Health or in the App.
Go to Settings → Privacy → Delete all data in the App to permanently erase every fast, weight entry, note and setting on your device. Deleting the App also removes all locally stored content.
No. Fastwell is a wellness and educational tool, not a medical device. Fasting isn't right for everyone — consult a qualified healthcare professional before starting, especially if you are pregnant, breastfeeding, under 18, or have a medical condition.
Privacy Policy · Terms of Use (Apple Standard EULA)
© 2026 Vadim Semenko. All rights reserved.