FastUp is a simple intermittent fasting timer built for people who want the essentials without accounts, cloud sync, or subscriptions.
Start a fast in one tap, follow your remaining time, and move into an eating window when the fast is complete. Choose a common intermittent fasting plan or create your own daily rhythm, then review past fasts and weekly consistency over time.
Features:
- One-tap fasting timer
- 14:10, 16:8, 18:6, 20:4, and OMAD-style plans
- Custom fasting plans
- Eating window countdown after completed fasts
- Optional fast-end and daily start reminders
- History log with completed and short fasts
- Streak and weekly completion summary
- Optional weight trend tracking
- Companion watchOS app
- 100% offline storage
FastUp stores your data on your device. No account, no analytics SDKs, no tracking.
