# 다이어트신 vs InterFasting

The clearest difference is rating: InterFasting at 4.8 against 다이어트신's 4.2. InterFasting also leads on update cadence (every 2 days vs monthly) and review sentiment (88% vs 64%). 다이어트신's advantage is in-app purchases (none vs 3) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

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

InterFasting holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: InterFasting has 267 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 64% of 다이어트신's written reviews are positive against 88% of InterFasting's.

다이어트신 ships an update monthly, InterFasting every 2 days. The most recent releases landed on August 29, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | 다이어트신 | InterFasting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (14 ratings)](https://appshunter.io/ios/app/id981460948/reviews) | **[4.8 (267 ratings)](https://appshunter.io/ios/app/interfasting-fasting-timer/id1467464443/reviews)** |
| Number of ratings | 14 | **267** |
| Positive reviews | 63.6% of reviews | **88.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 28 MB | 85 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [hye jin Park](https://appshunter.io/developer/495610717) | [Kim Yunhoo](https://appshunter.io/developer/1464827169) |

## What reviewers say

### 다이어트신

[App page](https://appshunter.io/ios/app/id981460948)

**Features:** macOS Compatibility

**In-app purchases:** none


### InterFasting

[App page](https://appshunter.io/ios/app/interfasting-fasting-timer/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 |


## Frequently asked questions

### Is 다이어트신 free?

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

### Is InterFasting free?

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

### Which has better reviews, 다이어트신 or InterFasting?

InterFasting is rated higher. 다이어트신 averages 4.2 out of 5 from 14 ratings, while InterFasting averages 4.8 from 267 ratings.

### Do 다이어트신 or InterFasting have ads?

Both 다이어트신 and InterFasting show ads.

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

다이어트신 ships an update monthly, and InterFasting every 2 days. Most recently, 다이어트신 was updated on August 29, 2026 and InterFasting on September 22, 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.*