# OnFit vs OntoFit

The clearest difference is review sentiment: OntoFit at 28% against OnFit's 18%. OntoFit also leads on iOS requirement (9.0 vs 14.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OnFit ships an update every 2 months, OntoFit every 3 months. The most recent releases landed on September 21, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | OnFit | OntoFit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (5 ratings)](https://appshunter.io/ios/app/ontofit/id1453150726/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | 18.2% of reviews | **28.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 6 MB | 125 MB |
| Requires iOS | 14.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SELVAS AI Inc.](https://appshunter.io/developer/333244716) | [文妤 黄](https://appshunter.io/developer/1383669544) |

## What reviewers say

### OnFit

[App page](https://appshunter.io/ios/app/onfit/id1361868277)

Manage your gym membership, schedule classes, and track your fitness journey. Get personalized workout plans, monitor your progress with detailed exercise records and movement analysis, and stay motivated with rewards and community sharing.

**Highlights:** Membership management, Mobile class scheduling, Customized exercise programs, Automatic exercise record tracking, Movement and physical change analysis, Diet management, Motivational rewards and community features

**Features:** Vision Pro support

**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 OnFit free?

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

### Is OntoFit free?

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

### Do OnFit or OntoFit have ads?

Neither OnFit nor OntoFit shows ads.

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

OnFit ships an update every 2 months, and OntoFit every 3 months. Most recently, OnFit was updated on September 21, 2026 and OntoFit on September 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.*