Lowest price: Free 5 months ago (-100%)
This app helps you manage your fasting schedule with customizable timers and reminders. It offers a recurring weekly routine, a timer that remembers your progress, and a clear view of your active fast. Review your history and track your streaks, all while keeping your data private on your device.
1.3.0
October 3, 2026
A clearer Home screen: see your chosen duration and start your fast directly. During a session, elapsed time and the planned finish take priority. Correct the start time without replacing the session, and see confirmation once it is saved. Your routines, history and existing access are preserved.
More$0.99
Coffee
Optional tip. Unlocks no features.
FastZen is a fasting routine and timer tool designed to help users manage their intermittent fasting schedules. It offers customizable timers, recurring weekly routines, and private data storage on your device.
No, FastZen is ad-free. The description explicitly states 'No account, ads, server sync, or external analytics,' ensuring an uninterrupted user experience.
The core features of FastZen, including the timer, weekly routine, local reminders, Live Activities, and history, are free. The 'Custom Week' feature, which allows for more personalized scheduling, is available as a one-time purchase.
All your fasting data, including completed fasts, duration, and streaks, stays on your device. FastZen does not use accounts, server sync, or external analytics, prioritizing user privacy.
FastZen is available for iPhone and iPad. It supports Live Activities, which are a feature of supported iPhones.
The latest version of FastZen is 1.2.2, which was last updated on September 20, 2026. This indicates a relatively active development cycle for the app.
No, FastZen is a timer and routine tool and does not provide medical advice or promise specific health outcomes. It is intended for personal tracking and management of fasting schedules.
You can set custom fasts ranging from 1 to 48 hours. Popular options like 16:8, 18:6, 20:4, and OMAD are also available.
