# Fast vs I Fast Different

The clearest difference is iOS requirement: I Fast Different at 17.0 against Fast's 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.

## The numbers

| Metric | Fast | I Fast Different |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/i-fast-different/id6784681501/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | — | Free |
| Size | 22 MB | 6 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [CodeHive](https://appshunter.io/developer/1196672412) | [Left To My Own Devices Computer Solutions](https://appshunter.io/developer/6784681503) |

## What reviewers say

### 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


### I Fast Different

[App page](https://appshunter.io/ios/app/i-fast-different/id6784681501)

This app offers a unique intermittent fasting approach by alternating shorter and longer fasting periods. It provides a clear countdown, flexible control over your fasts, and detailed logs and statistics to help you track your progress. Designed for privacy, your data remains on your device.

**Highlights:** Alternating fast cycles, Live progress countdown ring, Flexible start and mid-fast control, Detailed logging and calendar view, Statistics and streak tracking, Customizable reminders, Apple Watch integration

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Fast free?

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

### Is I Fast Different free?

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

### Do Fast or I Fast Different have ads?

Neither Fast nor I Fast Different 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.*