# Corner4 vs WUNDER TRAINING

The clearest difference is update cadence: Corner4 at fortnightly against WUNDER TRAINING's every 3 months. 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.

Corner4 ships an update fortnightly, WUNDER TRAINING every 3 months. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Corner4 | WUNDER TRAINING |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Size | 201 MB | 9 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [NALEVA SPORTS SL](https://appshunter.io/developer/1465735784) | [Wunder Training](https://appshunter.io/developer/1858837480) |

## What reviewers say

### Corner4

[App page](https://appshunter.io/ios/app/corner4/id1143929943)

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

**In-app purchases:** none


### WUNDER TRAINING

[App page](https://appshunter.io/ios/app/wunder-training/id6756173426)

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

**In-app purchases:** none


## Frequently asked questions

### Is Corner4 free?

Corner4 is free to download, with no in-app purchases.

### Is WUNDER TRAINING free?

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

### Do Corner4 or WUNDER TRAINING have ads?

Neither Corner4 nor WUNDER TRAINING shows ads.

### Which is updated more often, Corner4 or WUNDER TRAINING?

Corner4 ships an update fortnightly, and WUNDER TRAINING every 3 months. Most recently, Corner4 was updated on October 24, 2026 and WUNDER TRAINING on October 22, 2026.

---

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