# Relentless vs ON

The clearest difference is in-app purchases: Relentless at none against ON's 3. Relentless also leads on update cadence (every 2 weeks vs every 4 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ON sells 3 in-app purchases, starting at $30.00 per month. Relentless asks for nothing beyond the download.

Relentless ships an update every 2 weeks, ON every 4 weeks. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Relentless | ON |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 weeks |
| Size | 56 MB | 145 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Itensity Management Software (PTY) Ltd](https://appshunter.io/developer/914495980) | [Global Fitness Holdings Ltd](https://appshunter.io/developer/1490993741) |

## What reviewers say

### Relentless

[App page](https://appshunter.io/ios/app/relentless/id6742490410)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Relentless free?

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

### Is ON free?

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

### Do Relentless or ON have ads?

Neither Relentless nor ON shows ads.

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

Relentless ships an update every 2 weeks, and ON every 4 weeks. Most recently, Relentless was updated on October 16, 2026 and ON on October 11, 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.*