# ON vs FitMentor

The clearest difference is update cadence: FitMentor at every 6 days against ON's every 3 weeks. ON's advantage is iOS requirement (15.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ON sells 3 in-app purchases, starting at $30.00 per month and FitMentor sells 4 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

ON ships an update every 3 weeks, FitMentor every 6 days. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | ON | FitMentor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Size | 152 MB | 21 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [Global Fitness Holdings Ltd](https://appshunter.io/developer/1490993741) | [Gabriel Hugo](https://appshunter.io/developer/1886425344) |

## What reviewers say

### ON

[App page](https://appshunter.io/ios/app/on-dmnd/id6742744299)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $30.00 | per month |
| Quarterly Subscription | $34.99 | per 3 months |
| Annual Subscription | $284.99 | per year |


### FitMentor

[App page](https://appshunter.io/ios/app/fitmentor/id6760829015)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Discount | $8.99 | per month |
| Monthly | $9.99 | per month |
| Yearly | $89.99 | per year |
| Yearly | $99.99 | per year |


## Frequently asked questions

### Is ON free?

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

### Is FitMentor free?

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

### Do ON or FitMentor have ads?

Neither ON nor FitMentor shows ads.

### Which is updated more often, ON or FitMentor?

ON ships an update every 3 weeks, and FitMentor every 6 days. Most recently, ON was updated on November 4, 2026 and FitMentor on November 5, 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.*