# Leon Owner vs EU Carrier Interface Training

The clearest difference is update cadence: Leon Owner at every 6 weeks against EU Carrier Interface Training's every 4 months. EU Carrier Interface Training's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

Leon Owner ships an update every 6 weeks, EU Carrier Interface Training every 4 months. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Leon Owner | EU Carrier Interface Training |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Size | 24 MB | 19 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Leon Software](https://appshunter.io/developer/443136429) | [European Union Apps](https://appshunter.io/developer/947823674) |

## What reviewers say

### Leon Owner

[App page](https://appshunter.io/ios/app/leon-owner/id1501703233)

**Features:** macOS Compatibility

**In-app purchases:** none


### EU Carrier Interface Training

[App page](https://appshunter.io/ios/app/eu-carrier-interface-training/id6479641333)

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

**In-app purchases:** none


## Frequently asked questions

### Is Leon Owner free?

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

### Is EU Carrier Interface Training free?

EU Carrier Interface Training is free to download, with no in-app purchases.

### Do Leon Owner or EU Carrier Interface Training have ads?

Neither Leon Owner nor EU Carrier Interface Training shows ads.

### Which is updated more often, Leon Owner or EU Carrier Interface Training?

Leon Owner ships an update every 6 weeks, and EU Carrier Interface Training every 4 months. Most recently, Leon Owner was updated on September 22, 2026 and EU Carrier Interface Training on September 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*