# Inner vs Trainen bij OO

The clearest difference is update cadence: Inner at weekly against Trainen bij OO'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.

Inner ships an update weekly, Trainen bij OO every 3 months. The most recent releases landed on October 9, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Inner | Trainen bij OO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 months |
| Size | 119 MB | 15 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Stichting De Hoop](https://appshunter.io/developer/1854115924) | [Trainin](https://appshunter.io/developer/1732652497) |

## What reviewers say

### Inner

[App page](https://appshunter.io/ios/app/inner/id6755479067)

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

**In-app purchases:** none


### Trainen bij OO

[App page](https://appshunter.io/ios/app/trainen-bij-oo/id6762283315)

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

**In-app purchases:** none


## Frequently asked questions

### Is Inner free?

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

### Is Trainen bij OO free?

Trainen bij OO is free to download, with no in-app purchases.

### Do Inner or Trainen bij OO have ads?

Neither Inner nor Trainen bij OO shows ads.

### Which is updated more often, Inner or Trainen bij OO?

Inner ships an update weekly, and Trainen bij OO every 3 months. Most recently, Inner was updated on October 9, 2026 and Trainen bij OO on September 30, 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.*