FastZen: Private Fast Timer
Intermittent fasting timer
Free · In‑App Purchases
Start a 16:8 or custom fast in seconds, keep it on your Lock Screen, and build a private weekly routine—free, with no account, ads, server sync, or paywall.
FastZen is a free, private fasting timer with no account, ads, server sync, or paywall. Start in seconds, follow your fast on the Lock Screen, shape a weekly routine, and keep your history on device.
START FASTING IN ONE TAP
Choose 16:8, 18:6, 20:4, OMAD, or a custom duration. Start, stop, or cancel a fast without account setup or extra clutter.
PLAN YOUR WEEK
Choose fasting days and a start time. Optional local reminders help you follow your routine without sending personal data to a server.
FOLLOW YOUR FAST FROM THE LOCK SCREEN
Live Activities keep your active fast visible on the Lock Screen and Dynamic Island, with remaining time, progress, and your current fasting zone.
SEE YOUR PROGRESS
Follow elapsed time, remaining time, target duration, and your current fasting zone from a clean visual timeline.
BUILD CONSISTENCY
Review completed fasts, completion percentages, total fasting time, and your current streak.
STAY PRIVATE
FastZen does not require an account, server sync, or external analytics. Your fasting data stays on your device.
FastZen is designed for people who want a simple, private, and visually calm way to make intermittent fasting easier to follow.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
FastZen remains free and private: start a fast in seconds, shape a weekly routine, follow progress on the Lock Screen, choose a custom duration from 1 to 48 hours, and keep history on device.
The developer, Benjamin Dupin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Benjamin Dupin
- Size
- 1.4 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later.
- iPhone
- Languages
English and 6 more
- English, French, German, Italian, Japanese, Portuguese, Spanish
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Support development $4.99
- Thanks $2.99
- Coffee $0.99
- Copyright
- © 2026 Benjamin Dupin