# Fastyn vs ZenithFast

The clearest difference is ads: Fastyn at none against ZenithFast's shown. ZenithFast's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.6). On price and in-app purchases there is nothing between them.

Both are free to download. Fastyn sells 3 in-app purchases, starting at $1.99 per 7 days and ZenithFast sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Fastyn | ZenithFast |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | — |
| Size | 35 MB | 56 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [MANUEL MATAS GALEOTE](https://appshunter.io/developer/1794633190) | [Lunar Pixel](https://appshunter.io/developer/1894289905) |

## What reviewers say

### Fastyn

[App page](https://appshunter.io/ios/app/fastyn-intermittent-fasting/id6744653719)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fastyn Plus Weekly | $1.99 | per 7 days |
| Fastyn Plus Monthly | $3.99 | per month |
| Fastyn Plus Annual | $17.99 | per year |


### ZenithFast

[App page](https://appshunter.io/ios/app/zenithfast-fasting-tracker/id6762472390)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Annual | $39.99 | per year |


## Frequently asked questions

### Is Fastyn free?

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

### Is ZenithFast free?

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

### Do Fastyn or ZenithFast have ads?

ZenithFast shows ads; Fastyn does not.

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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.*