# ON4Maps vs Dirt by Mayday

The clearest difference is in-app purchases: ON4Maps at none against Dirt by Mayday's 2. ON4Maps also leads on iOS requirement (12.0 vs 26.0). Dirt by Mayday's advantage is update cadence (fortnightly vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Dirt by Mayday sells 2 in-app purchases, starting at $9.99 per month. ON4Maps asks for nothing beyond the download.

ON4Maps ships an update every 5 weeks, Dirt by Mayday fortnightly. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | ON4Maps | Dirt by Mayday |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Size | 485 MB | 61 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [MapGears inc.](https://appshunter.io/developer/1439850962) | [Hella Creative Solutions](https://appshunter.io/developer/1837436298) |

## What reviewers say

### ON4Maps

[App page](https://appshunter.io/ios/app/on4maps/id6477544851)

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

**In-app purchases:** none


### Dirt by Mayday

[App page](https://appshunter.io/ios/app/dirt-by-mayday/id6794633890)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DIRT PRO Monthly | $9.99 | per month |
| DIRT PRO Yearly | $39.99 | per year |


## Frequently asked questions

### Is ON4Maps free?

ON4Maps is free to download, with no in-app purchases.

### Is Dirt by Mayday free?

Dirt by Mayday is free to download, with in-app purchases available.

### Do ON4Maps or Dirt by Mayday have ads?

Neither ON4Maps nor Dirt by Mayday shows ads.

### Which is updated more often, ON4Maps or Dirt by Mayday?

ON4Maps ships an update every 5 weeks, and Dirt by Mayday fortnightly. Most recently, ON4Maps was updated on October 24, 2026 and Dirt by Mayday on October 29, 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.*