# IEU Lecturio vs QuestionOasis

The clearest difference is in-app purchases: IEU Lecturio at none against QuestionOasis's 1. QuestionOasis's advantage is update cadence (monthly vs every 4 months) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. QuestionOasis sells 1 in-app purchase, starting at $4.99 per month. IEU Lecturio asks for nothing beyond the download.

IEU Lecturio ships an update every 4 months, QuestionOasis monthly. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | IEU Lecturio | QuestionOasis |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Size | 117 MB | 34 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +17 | 4+ |
| Developer | [Lecturio GmbH](https://appshunter.io/developer/667474928) | [Deniz Barıs CAKIROGLU](https://appshunter.io/developer/1767156681) |

## What reviewers say

### IEU Lecturio

[App page](https://appshunter.io/ios/app/ieu-lecturio/id1555445365)

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

**In-app purchases:** none


### QuestionOasis

[App page](https://appshunter.io/ios/app/questionoasispractice-with-ai/id6670706155)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| QuestionOasis Premium | $4.99 | per month |


## Frequently asked questions

### Is IEU Lecturio free?

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

### Is QuestionOasis free?

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

### Do IEU Lecturio or QuestionOasis have ads?

Neither IEU Lecturio nor QuestionOasis shows ads.

### Which is updated more often, IEU Lecturio or QuestionOasis?

IEU Lecturio ships an update every 4 months, and QuestionOasis monthly. Most recently, IEU Lecturio was updated on November 4, 2026 and QuestionOasis on October 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.*