# Fasting Clock vs Simple Fasting Timer

The clearest difference is in-app purchases: Fasting Clock at none against Simple Fasting Timer's 1. Fasting Clock also leads on iOS requirement (13.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Simple Fasting Timer sells 1 one-off in-app purchase. Fasting Clock asks for nothing beyond the download.

Fasting Clock ships an update every 2 days, Simple Fasting Timer daily. The most recent releases landed on September 21, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Fasting Clock | Simple Fasting Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | **Daily** |
| Size | 34 MB | 2 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [anna kim](https://appshunter.io/developer/1895527781) | [Serghei Eschin](https://appshunter.io/developer/6774241012) |

## What reviewers say

### Fasting Clock

[App page](https://appshunter.io/ios/app/fasting-clock-if/id6763856247)

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

**In-app purchases:** none


### Simple Fasting Timer

[App page](https://appshunter.io/ios/app/simple-fasting-timer-168/id6787884048)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime | $6.99 | one-time |


## Frequently asked questions

### Is Fasting Clock free?

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

### Is Simple Fasting Timer free?

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

### Do Fasting Clock or Simple Fasting Timer have ads?

Neither Fasting Clock nor Simple Fasting Timer shows ads.

### Which is updated more often, Fasting Clock or Simple Fasting Timer?

Fasting Clock ships an update every 2 days, and Simple Fasting Timer daily. Most recently, Fasting Clock was updated on September 21, 2026 and Simple Fasting Timer on September 11, 2026.

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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.*