# OSIRIS Radboud University vs Lectaura

The clearest difference is in-app purchases: OSIRIS Radboud University at none against Lectaura's 2. OSIRIS Radboud University also leads on iOS requirement (11.0 vs 15.1). Lectaura's advantage is update cadence (every 4 days vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. Lectaura sells 2 in-app purchases, starting at $14.99 per month. OSIRIS Radboud University asks for nothing beyond the download.

OSIRIS Radboud University ships an update every 6 months, Lectaura every 4 days. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | OSIRIS Radboud University | Lectaura |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 days** |
| Size | 34 MB | 80 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [CACI bv](https://appshunter.io/developer/961337312) | [SPENCER PHILIP EARLY](https://appshunter.io/developer/1852105008) |

## What reviewers say

### OSIRIS Radboud University

[App page](https://appshunter.io/ios/app/osiris-radboud-university/id1482728353)

**Features:** macOS Compatibility

**In-app purchases:** none


### Lectaura

[App page](https://appshunter.io/ios/app/lectaura/id6755127770)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $14.99 | per month |
| Pro Annual | $149.99 | per year |


## Frequently asked questions

### Is OSIRIS Radboud University free?

OSIRIS Radboud University is free to download, with no in-app purchases.

### Is Lectaura free?

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

### Do OSIRIS Radboud University or Lectaura have ads?

Neither OSIRIS Radboud University nor Lectaura shows ads.

### Which is updated more often, OSIRIS Radboud University or Lectaura?

OSIRIS Radboud University ships an update every 6 months, and Lectaura every 4 days. Most recently, OSIRIS Radboud University was updated on October 26, 2026 and Lectaura on October 28, 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.*