# Aventus | Osiris vs Learn@Zeeman

The clearest difference is iOS requirement: Aventus | Osiris at 11.0 against Learn@Zeeman's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Aventus | Osiris ships an update every 4 months, Learn@Zeeman every 5 months. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Aventus | Osiris | Learn@Zeeman |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Size | 34 MB | 40 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CACI bv](https://appshunter.io/developer/961337312) | [UPLearning B.V.](https://appshunter.io/developer/843256660) |

## What reviewers say

### Aventus | Osiris

[App page](https://appshunter.io/ios/app/aventus-osiris/id1632011986)

**Features:** macOS Compatibility

**In-app purchases:** none


### Learn@Zeeman

[App page](https://appshunter.io/ios/app/learnzeeman/id1664146924)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Aventus | Osiris free?

Aventus | Osiris is free to download, with no in-app purchases.

### Is Learn@Zeeman free?

Learn@Zeeman is free to download, with no in-app purchases.

### Do Aventus | Osiris or Learn@Zeeman have ads?

Neither Aventus | Osiris nor Learn@Zeeman shows ads.

### Which is updated more often, Aventus | Osiris or Learn@Zeeman?

Aventus | Osiris ships an update every 4 months, and Learn@Zeeman every 5 months. Most recently, Aventus | Osiris was updated on October 9, 2026 and Learn@Zeeman on October 2, 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.*