# AllyFast vs ZenFast

The clearest difference is price: ZenFast at Free against AllyFast's $0.99. ZenFast also leads on iOS requirement (15.1 vs 18.2). AllyFast's advantage is in-app purchases (none vs 2) and chart position (#183 vs unranked). On ads and device support there is nothing between them.

ZenFast is free to download; AllyFast costs $0.99 up front. ZenFast sells 2 in-app purchases, starting at $0.99 per month. AllyFast asks for nothing beyond the download.

## The numbers

| Metric | AllyFast | ZenFast |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (18 ratings)](https://appshunter.io/ios/app/allyfast-fasting-tracker/id6743131202/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Paid | — |
| Best chart rank | **#183** | — |
| Size | 2 MB | 23 MB |
| Requires iOS | 18.2 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Wonseok Lee](https://appshunter.io/developer/1801568032) | [Beibi Technology Co., Ltd.](https://appshunter.io/developer/1721179393) |

## What reviewers say

### AllyFast

[App page](https://appshunter.io/ios/app/allyfast-fasting-tracker/id6743131202)

**Currently charting:** #183 Top Paid · Health & Fitness (US App Store)

This app offers a streamlined fasting timer with a clean, SwiftUI-based interface. It prioritizes user privacy with local data storage and provides science-based insights into fasting stages. Enjoy a clutter-free, ad-free experience with no subscriptions.

**Highlights:** SwiftUI fasting timer, Local data storage, No subscriptions or ads, Fasts up to 72 hours, Editable fasting history, Science-based fasting insights

**Features:** macOS Compatibility

**In-app purchases:** none


### ZenFast

[App page](https://appshunter.io/ios/app/zenfast-fasting-tracker/id6743153648)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access (1 month) | $0.99 | per month |
| All Access (lifetime) | $4.99 | one-time |


## Frequently asked questions

### Is AllyFast free?

AllyFast costs $0.99, with no in-app purchases.

### Is ZenFast free?

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

### Do AllyFast or ZenFast have ads?

Neither AllyFast nor ZenFast shows ads.

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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.*