# ZenFast vs ByteFast

The clearest difference is in-app purchases: ByteFast at none against ZenFast's 2. ZenFast's advantage is iOS requirement (15.1 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. ZenFast sells 2 in-app purchases, starting at $0.99 per month. ByteFast asks for nothing beyond the download.

## The numbers

| Metric | ZenFast | ByteFast |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 23 MB | 11 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Beibi Technology Co., Ltd.](https://appshunter.io/developer/1721179393) | [ByteSeed](https://appshunter.io/developer/1896674402) |

## 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 |


### ByteFast

[App page](https://appshunter.io/ios/app/bytefast-fasting-tracker-168/id6769618458)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ZenFast free?

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

### Is ByteFast free?

ByteFast is free to download, with no in-app purchases.

### Do ZenFast or ByteFast have ads?

Neither ZenFast nor ByteFast 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.*