# SimpleFast vs ByteFast

The clearest difference is iOS requirement: ByteFast at 18.0 against SimpleFast's 26.2. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | SimpleFast | ByteFast |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 6 MB | 11 MB |
| Requires iOS | 26.2 | **18.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Khitdhikhun Klinsang](https://appshunter.io/developer/1891241513) | [ByteSeed](https://appshunter.io/developer/1896674402) |

## What reviewers say

### SimpleFast

[App page](https://appshunter.io/ios/app/simplefast-fasting-tracker/id6765591381)

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

**In-app purchases:** none


### 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 SimpleFast free?

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

### Is ByteFast free?

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

### Do SimpleFast or ByteFast have ads?

Neither SimpleFast 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.*