# Just Fast vs Simple Fasting

The clearest difference is in-app purchases: Just Fast at none against Simple Fasting's 1. Just Fast also leads on update cadence (every 3 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

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

Just Fast ships an update every 3 weeks, Simple Fasting every 4 months. The most recent releases landed on September 20, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Just Fast | Simple Fasting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/just-fast-fasting-timer/id6752963711/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Ad-supported | — |
| Size | 47 MB | 28 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Adrian Cabala](https://appshunter.io/developer/1841708643) | [UIXLY AS](https://appshunter.io/developer/6789231409) |

## What reviewers say

### Just Fast

[App page](https://appshunter.io/ios/app/just-fast-fasting-timer/id6752963711)

This app tracks both your fasting periods and your eating windows, offering a unique dual-countdown feature. It visualizes metabolic phases like fat burning and ketosis, supports various fasting methods, and provides insights into your progress. It's designed to be user-friendly and privacy-conscious, working entirely offline.

**Highlights:** Eating window countdown, Fasting phases visualization, Support for multiple fasting methods, Streak tracking with grace periods, Pattern insights, Weight and BMI tracking, Smart notifications, 100% offline functionality

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

**In-app purchases:** none


### Simple Fasting

[App page](https://appshunter.io/ios/app/simple-fasting/id6756801491)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ADs | $0.99 | one-time |


## Frequently asked questions

### Is Just Fast free?

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

### Is Simple Fasting free?

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

### Do Just Fast or Simple Fasting have ads?

Both Just Fast and Simple Fasting show ads.

### Which is updated more often, Just Fast or Simple Fasting?

Just Fast ships an update every 3 weeks, and Simple Fasting every 4 months. Most recently, Just Fast was updated on September 20, 2026 and Simple Fasting on September 26, 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.*