# Üben vs Readback

The clearest difference is price: Readback at Free against Üben's $0.99. Readback also leads on update cadence (monthly vs every 11 months). Üben's advantage is iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Readback 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 11 months, Readback monthly. The most recent releases landed on August 31, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Üben | Readback |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Monthly** |
| Monetization | Paid | — |
| Size | 19 MB | 51 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [admaDIC Rainer Schwarze & Annett Schwarze GbR](https://appshunter.io/developer/553282875) | [Dinnova AG](https://appshunter.io/developer/1557907125) |

## What reviewers say

### Üben

[App page](https://appshunter.io/ios/app/uben-conversion/id1061481156)

Practice converting units of length and weight with this simple educational app. It generates random conversion tasks, perfect for children to learn and test their knowledge.

**Highlights:** Unit conversion practice, Length and weight units, Random task generation, Correct/incorrect feedback, Child-friendly design

**Features:** Vision Pro support

**In-app purchases:** none


### Readback

[App page](https://appshunter.io/ios/app/readback/id6751527692)

**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 Readback free?

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

### Do Üben or Readback have ads?

Neither Üben nor Readback shows ads.

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

Üben ships an update every 11 months, and Readback monthly. Most recently, Üben was updated on August 31, 2026 and Readback on September 23, 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.*