# ONF Découvertes vs Linja

The clearest difference is in-app purchases: ONF Découvertes at none against Linja's 2. ONF Découvertes also leads on ads (none vs shown). Linja's advantage is update cadence (every 8 days vs every 5 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Linja sells 2 in-app purchases, starting at $1.99 per month. ONF Découvertes asks for nothing beyond the download.

ONF Découvertes ships an update every 5 months, Linja every 8 days. The most recent releases landed on August 24, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | ONF Découvertes | Linja |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 8 days** |
| Monetization | Free | — |
| Size | 114 MB | 92 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Office national des forets](https://appshunter.io/developer/448643917) | [Axel Parsy](https://appshunter.io/developer/1816434418) |

## What reviewers say

### ONF Découvertes

[App page](https://appshunter.io/ios/app/onf-decouvertes/id1480536631)

Explore nature and cultural heritage through guided hikes, treasure hunts, and adventure games. Experience virtual elements to understand the real world with offline GPS navigation for safe, self-paced exploration.

**Highlights:** GPS-guided nature walks, Treasure hunt games, Adventure games, Offline content access, Discover local heritage, Family-friendly activities

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

**In-app purchases:** none


### Linja

[App page](https://appshunter.io/ios/app/linja/id6756112901)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Linja Premium Mensuel | $1.99 | per month |
| Linja Premium Annuel | $14.99 | per year |


## Frequently asked questions

### Is ONF Découvertes free?

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

### Is Linja free?

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

### Do ONF Découvertes or Linja have ads?

Linja shows ads; ONF Découvertes does not.

### Which is updated more often, ONF Découvertes or Linja?

ONF Découvertes ships an update every 5 months, and Linja every 8 days. Most recently, ONF Découvertes was updated on August 24, 2026 and Linja on September 23, 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.*