# ZenFast vs Simple Fasting

The clearest difference is device support: ZenFast at 3 against Simple Fasting's 1. ZenFast also leads on iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. ZenFast sells 2 in-app purchases, starting at $0.99 per month and Simple Fasting sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | ZenFast | Simple Fasting |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 23 MB | 72 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Beibi Technology Co., Ltd.](https://appshunter.io/developer/1721179393) | [Oleksandr Kryzhanovskyi](https://appshunter.io/developer/1755912450) |

## What reviewers say

### 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 |


### Simple Fasting

[App page](https://appshunter.io/ios/app/simple-fasting-flexible-timer/id6789996869)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $4.99 | per 7 days |
| Premium Yearly | $19.99 | per year |


## Frequently asked questions

### Is ZenFast free?

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

### Is Simple Fasting free?

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

### Do ZenFast or Simple Fasting have ads?

Neither ZenFast nor Simple Fasting 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.*