# InterFasting vs 운도니

The clearest difference is in-app purchases: 운도니 at none against InterFasting's 3. 운도니 also leads on ads (none vs shown). InterFasting's advantage is update cadence (every 4 days vs every 3 weeks). On price, review sentiment, device support and iOS requirement there is nothing between them.

Both are free to download. InterFasting sells 3 in-app purchases, starting at $3.99 per month. 운도니 asks for nothing beyond the download.

InterFasting ships an update every 4 days, 운도니 every 3 weeks. The most recent releases landed on October 18, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | InterFasting | 운도니 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (348 ratings)](https://appshunter.io/ios/app/interfasting-fasting-tracker/id1467464443/reviews)** | — |
| Number of ratings | **348** | — |
| Positive reviews | **88.6% of reviews** | 83.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 99 MB | 69 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Liviet](https://appshunter.io/developer/1464827169) | [stretchjoy](https://appshunter.io/developer/1650729424) |

## What reviewers say

### InterFasting

[App page](https://appshunter.io/ios/app/interfasting-fasting-tracker/id1467464443)

This app helps users succeed with intermittent fasting through scientific and systematic management. It offers AI-powered schedule and calorie recommendations, a simple timer, and comprehensive tracking of fasting hours, meals, workouts, and water intake. Users can visualize progress and receive detailed reports to build healthy habits.

**Highlights:** AI fasting schedule recommendations, AI food calorie calculation, Intermittent fasting timer, Customizable fasting plans, All-in-one health tracking, Fasting analysis and reports, Home screen widget

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 month | $3.99 | per month |
| Gandan Premium Annual | $12.99 | per year |
| Premium User | $12.99 | one-time |


### 운도니

[App page](https://appshunter.io/ios/app/id6478490423)

This app helps you build healthy habits through small, consistent exercises. It offers personalized stretching routines for your entire body, focusing on areas like the neck, shoulders, knees, and hips. Start your fitness journey with guided video workouts.

**Highlights:** Personalized stretching routines, Video-based workout guidance, Targeted training by goal or body part, Habit building for fitness, Full body stretching

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is InterFasting free?

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

### Is 운도니 free?

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

### Do InterFasting or 운도니 have ads?

InterFasting shows ads; 운도니 does not.

### Which is updated more often, InterFasting or 운도니?

InterFasting ships an update every 4 days, and 운도니 every 3 weeks. Most recently, InterFasting was updated on October 18, 2026 and 운도니 on October 2, 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.*