# Fasting Tracker vs Fast

The clearest difference is update cadence: Fasting Tracker at every 4 days against Fast's every 2 weeks. Fasting Tracker also leads on iOS requirement (15.3 vs 26.0). 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.

Fasting Tracker ships an update every 4 days, Fast every 2 weeks. Both last shipped on August 18, 2026.

## The numbers

| Metric | Fasting Tracker | Fast |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Size | 42 MB | 22 MB |
| Requires iOS | **15.3** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [Days Until LTD](https://appshunter.io/developer/1224814198) | [CodeHive](https://appshunter.io/developer/1196672412) |

## What reviewers say

### Fasting Tracker

[App page](https://appshunter.io/ios/app/fasting-tracker-fastingai/id6578452948)

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

**In-app purchases:** none


### Fast

[App page](https://appshunter.io/ios/app/fast-intermittent-fasting/id6741595659)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fasting Tracker free?

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

### Is Fast free?

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

### Do Fasting Tracker or Fast have ads?

Neither Fasting Tracker nor Fast shows ads.

### Which is updated more often, Fasting Tracker or Fast?

Fasting Tracker ships an update every 4 days, and Fast every 2 weeks. Most recently, Fasting Tracker was updated on August 18, 2026 and Fast on August 18, 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.*