# Üben vs Knowledgetraining

The clearest difference is price: Knowledgetraining at Free against Üben's $0.99. Knowledgetraining also leads on update cadence (every 2 months vs every 6 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Knowledgetraining is free to download; Üben costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Üben ships an update every 6 months, Knowledgetraining every 2 months. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Üben | Knowledgetraining |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 27 MB | 19 MB |
| Requires iOS | 13.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [admaDIC Rainer Schwarze & Annett Schwarze GbR](https://appshunter.io/developer/553282875) | [Frank Tautges](https://appshunter.io/developer/1718994207) |

## What reviewers say

### Üben

[App page](https://appshunter.io/ios/app/uben-roman-numbers/id1544999984)

Practice Roman numerals with this straightforward educational app. It generates random Roman numeral tasks and provides instant feedback on your answers, making it ideal for children learning the system.

**Highlights:** Random Roman numeral tasks, Instant correctness feedback, Answer tracking, Simple, child-friendly design

**Features:** Vision Pro support

**In-app purchases:** none


### Knowledgetraining

[App page](https://appshunter.io/ios/app/knowledgetraining/id6474093245)

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

**In-app purchases:** none


## Frequently asked questions

### Is Üben free?

Üben costs $0.99, with no in-app purchases.

### Is Knowledgetraining free?

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

### Do Üben or Knowledgetraining have ads?

Neither Üben nor Knowledgetraining shows ads.

### Which is updated more often, Üben or Knowledgetraining?

Üben ships an update every 6 months, and Knowledgetraining every 2 months. Most recently, Üben was updated on October 10, 2026 and Knowledgetraining on October 3, 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.*