# SimpleFast vs Sundial

The clearest difference is in-app purchases: SimpleFast at none against Sundial's 1. Sundial's advantage is iOS requirement (16.4 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. Sundial sells 1 one-off in-app purchase. SimpleFast asks for nothing beyond the download.

## The numbers

| Metric | SimpleFast | Sundial |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 5 months |
| Size | 6 MB | 58 MB |
| Requires iOS | 26.2 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Khitdhikhun Klinsang](https://appshunter.io/developer/1891241513) | [Vitalii Iudin](https://appshunter.io/developer/6771651864) |

## 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


### Sundial

[App page](https://appshunter.io/ios/app/sundial-fasting-and-omad-timer/id6779303724)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sundial Lifetime | $2.99 | one-time |


## Frequently asked questions

### Is SimpleFast free?

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

### Is Sundial free?

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

### Do SimpleFast or Sundial have ads?

Neither SimpleFast nor Sundial 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.*