# Intermittent Fasting vs Simple Fasting

The clearest difference is update cadence: Intermittent Fasting at every 2 weeks against Simple Fasting's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Intermittent Fasting sells 4 in-app purchases, starting at $2.99 per month and Simple Fasting sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Intermittent Fasting ships an update every 2 weeks, Simple Fasting every 4 months. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Intermittent Fasting | Simple Fasting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (11 ratings)](https://appshunter.io/ios/app/intermittent-fasting-justfast/id6752963711/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | Ad-supported | — |
| Size | 126 MB | 28 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Adrian Cabala](https://appshunter.io/developer/1841708643) | [UIXLY AS](https://appshunter.io/developer/6789231409) |

## What reviewers say

### Intermittent Fasting

[App page](https://appshunter.io/ios/app/intermittent-fasting-justfast/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, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Just Fast Plus monthly | $2.99 | per month |
| Just Fast Plus | $14.99 | per year |
| Just Fast Plus | $14.99 | per year |
| Just Fast Plus Lifetime | $29.99 | one-time |


### 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 Intermittent Fasting free?

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

### Is Simple Fasting free?

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

### Do Intermittent Fasting or Simple Fasting have ads?

Both Intermittent Fasting and Simple Fasting show ads.

### Which is updated more often, Intermittent Fasting or Simple Fasting?

Intermittent Fasting ships an update every 2 weeks, and Simple Fasting every 4 months. Most recently, Intermittent Fasting was updated on October 29, 2026 and Simple Fasting on October 28, 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.*