# FastZen vs TimeFast

The clearest difference is price: FastZen at Free against TimeFast's $6.99. TimeFast's advantage is in-app purchases (none vs 5) and update cadence (daily vs every 5 days). On ads, device support and iOS requirement there is nothing between them.

FastZen is free to download; TimeFast costs $6.99 up front. FastZen sells 5 in-app purchases, starting at $1.99 per 7 days. TimeFast asks for nothing beyond the download.

FastZen ships an update every 5 days, TimeFast daily. The most recent releases landed on September 23, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | FastZen | TimeFast |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/fastzen-intermittent-fasting/id6744087602/reviews)** | — |
| Number of ratings | **9** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | **Daily** |
| Monetization | Freemium | — |
| Size | 27 MB | 1 MB |
| Requires iOS | **26.0** | 26.2 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [MefjuDev LLC](https://appshunter.io/developer/1777787735) | [Kilowatt Media](https://appshunter.io/developer/368608754) |

## What reviewers say

### FastZen

[App page](https://appshunter.io/ios/app/fastzen-intermittent-fasting/id6744087602)

This app helps you manage your intermittent fasting journey with custom schedules, progress tracking, and smart reminders. Achieve your weight loss and energy goals with a clean, intuitive interface and motivational features.

**Highlights:** Custom fasting schedules (16:8, 20:4, OMAD, up to 168 hours), Progress tracking with history, streaks, and insights, Smart reminders for fasting start and end times, Achievements and milestones for motivation, Calendar view of completed fasts, Light and dark mode, Widgets

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Monthly | $2.99 | per month |
| 3 Months | $7.99 | per 3 months |
| Yearly | $19.99 | per year |
| Lifetime | $39.99 | one-time |


### TimeFast

[App page](https://appshunter.io/ios/app/timefast/id6758301745)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FastZen free?

FastZen is free to download, with in-app purchases available.

### Is TimeFast free?

TimeFast costs $6.99, with no in-app purchases.

### Do FastZen or TimeFast have ads?

Neither FastZen nor TimeFast shows ads.

### Which is updated more often, FastZen or TimeFast?

FastZen ships an update every 5 days, and TimeFast daily. Most recently, FastZen was updated on September 23, 2026 and TimeFast on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*