# FastZen: Fasting Timer — A schedule that fits your week

> Fasting timer and routine manager with customizable schedules and private data storage. (iPhone/iPad app by Benjamin Dupin.)

- Source: https://appshunter.io/ios/app/fastzen-fasting-timer/id6761484595 (this page in markdown: same URL + `.md`)
- Developer: [Benjamin Dupin](https://appshunter.io/developer/1871474236)
- Category: Health & Fitness
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Brazilian Portuguese, European Spanish
- Released: 2026-04-02
- Data updated: 2026-10-07
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/fastzen-fasting-timer/id6761484595/reviews.md

## What is FastZen?

Follow your current fast and organize a week that fits your routine.

Start or end your timer, adjust times and review your history. Rest days belong in your schedule: the plan should fit your life, not the other way around.

The core timer is free. Custom Week is available as a one-time purchase, without a subscription. People who used FastZen before version 1.1.0 keep that access without paying.

This is a tracking tool, not medical advice or a weight-loss promise.

## Key features

- Customizable fasting schedules
- Recurring weekly routine setup
- Live Activities for active fast tracking
- Detailed fasting history and streaks
- No account, ads, or server sync
- Custom Week one-time purchase

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Coffee | $0.99 | one-time |
| Thanks | $2.99 | one-time |
| Support development | $4.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/fastzen-fasting-timer/id6761484595/reviews.md

### 5/5 — Une application simple à utiliser

*2026-09-07*

L’application est agréable et facile à utiliser. L’interface est claire et permet de suivre facilement les différentes fonctionnalités proposées. Les explications sont simples à comprendre et l’utilisation est plutôt intuitive.

## Frequently asked questions about FastZen

### What is FastZen?

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.

### Does FastZen have ads?

No, FastZen is ad-free. The description explicitly states 'No account, ads, server sync, or external analytics,' ensuring an uninterrupted user experience.

### What are the costs associated with FastZen?

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.

### How does FastZen handle my data?

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.

### What devices is FastZen compatible with?

FastZen is available for iPhone and iPad. It supports Live Activities, which are a feature of supported iPhones.

### How often is FastZen updated?

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.

### Can FastZen provide medical advice?

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.

### What fasting durations can I set with FastZen?

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.

## Version history (last 5 releases)

### 1.3.0 — 2026-10-03

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.

### 1.2.4 — 2026-09-24

Home now puts the timer, start time and planned end first. Preview seven days, including rest, before saving Custom Week in one step. History labels an early stop neutrally. Choose System, Light or Dark appearance. The free timer and previously granted access remain available.

### 1.2.3 — 2026-09-22

Home now shows today and the next planned departure, with rest days kept neutral and the full dated week one tap away. Restore still recovers eligible free access from before paid features were introduced, including after reinstalling. Your saved history, routine, one-day changes and settings are unchanged.

### 1.2.2 — 2026-09-20

Restore now also recovers eligible free access from before paid features were introduced, including after reinstalling. Temporary verification problems preserve previously verified access. Your saved history and settings are unchanged.

### 1.2.1 — 2026-09-13

Prepares FastZen for iOS and iPadOS 27 by handing ActivityKit updates across concurrency boundaries through stable activity identifiers. Timer calculations, routines, saved history, notifications, Live Activity content, Pro access and local data remain unchanged.

## Apps similar to FastZen

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Box Breathing Minimal Timer](https://appshunter.io/ios/app/box-breathing-minimal-timer/id6759810817) | — | $2.99 | Health & Fitness |
| [Elixr - Supplement Tracker](https://appshunter.io/ios/app/elixr-supplement-tracker/id6762560637) | — | $1.99 | Health & Fitness |
| [Health Share App](https://appshunter.io/ios/app/health-share-app/id6774078775) | — | Free | Health & Fitness |
| [Capi: Sleep Factors Analysis](https://appshunter.io/ios/app/capi-sleep-factors-analysis/id6772717443) | 5.0 (2) | Free | Health & Fitness |
| [Purrly - Sleep in Purr](https://appshunter.io/ios/app/purrly-sleep-in-purr/id6751825018) | 5.0 (4) | Free | Health & Fitness |
| [FreeBreath: Guided Breathing](https://appshunter.io/ios/app/freebreath-guided-breathing/id6740260958) | — | Free | Health & Fitness |

## More apps by Benjamin Dupin

- [LoadSense: Recovery & Training](https://appshunter.io/ios/app/loadsense-recovery-and-training/id6758211103)
- [TempoReps: Workout Timer](https://appshunter.io/ios/app/temporeps-workout-timer/id6758854166)
- [PRVault: PRs & One Rep Max](https://appshunter.io/ios/app/prvault-prs-and-one-rep-max/id6758960761)
- [NeatShift: Cleaning Schedule](https://appshunter.io/ios/app/neatshift-cleaning-schedule/id6759961773)
- [BrewMeter: Caffeine Tracker](https://appshunter.io/ios/app/brewmeter-caffeine-tracker/id6760132566)
- [GrooveLog: Pull-Up Coach](https://appshunter.io/ios/app/groovelog-pull-up-coach/id6760195408)

All apps by Benjamin Dupin: https://appshunter.io/developer/1871474236

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-07.*