Frequently Asked Questions
Is Fast.IO medical advice?
No. Fast.IO is a wellness and habit-tracking app. It does not provide medical advice.
What is included in Free vs Pro?
Free includes core fasting functionality. Pro adds full intervals, custom intervals, deeper history, advanced stats, widgets/watch enhancements, and more personalization.
Is Pro a subscription or one-time purchase?
Pro is a one-time purchase. There is no subscription.
How do I restore my Pro purchase?
Use the restore purchases option in the app while signed into the same App Store account used for purchase.
How does sync work?
Data continuity is supported through Apple ecosystem syncing so your iPhone and Apple Watch can remain aligned.
Why does the app request notifications?
Notifications support fasting milestones such as halfway, one-hour remaining, completion, and optional hydration reminders.
How do I add widgets or Live Activities?
Add Home/Lock Screen widgets from customization mode. Live Activities appear when an active fasting session is running.
Apple Watch sync is not updating. What should I do?
Confirm both devices are signed into the same Apple account, iCloud is available, and app permissions are enabled; then reopen both apps.