# 다이어트신 vs OntoFit

The clearest difference is rating: 다이어트신 at 4.2 against OntoFit's 3.0. 다이어트신 also leads on review sentiment (64% vs 28%) and update cadence (monthly vs every 3 months). OntoFit's advantage is ads (none vs shown) and iOS requirement (9.0 vs 13.0). On price, ratings volume, 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.

다이어트신 holds the better App Store score, 4.2 against 3.0. Both are backed by a comparable volume of ratings — 14 and 5 respectively. Written reviews point the same way: 64% of 다이어트신's written reviews are positive against 28% of OntoFit's.

다이어트신 ships an update monthly, OntoFit every 3 months. The most recent releases landed on October 13, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | 다이어트신 | OntoFit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (14 ratings)](https://appshunter.io/ios/app/id981460948/reviews)** | [3.0 (5 ratings)](https://appshunter.io/ios/app/ontofit/id1453150726/reviews) |
| Number of ratings | **14** | 5 |
| Positive reviews | **63.6% of reviews** | 28.3% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | — | Free |
| Size | 28 MB | 125 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [hye jin Park](https://appshunter.io/developer/495610717) | [文妤 黄](https://appshunter.io/developer/1383669544) |

## What reviewers say

### 다이어트신

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

**Features:** macOS Compatibility

**In-app purchases:** none


### OntoFit

[App page](https://appshunter.io/ios/app/ontofit/id1453150726)

This app provides detailed body composition analysis and tracks your health metrics over time. It offers personalized insights and supports multiple family users, integrating with health platforms for comprehensive health management.

**Highlights:** 13 body composition analysis, Trend charts for tracking changes, Body shaping measurements, Support for up to 24 users, Integration with Apple Health, Personalized app theme colors

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

**In-app purchases:** none


## Frequently asked questions

### Is 다이어트신 free?

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

### Is OntoFit free?

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

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

다이어트신 is rated higher. 다이어트신 averages 4.2 out of 5 from 14 ratings, while OntoFit averages 3.0 from 5 ratings.

### Do 다이어트신 or OntoFit have ads?

다이어트신 shows ads; OntoFit does not.

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

다이어트신 ships an update monthly, and OntoFit every 3 months. Most recently, 다이어트신 was updated on October 13, 2026 and OntoFit on October 22, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*