# Üben vs Chemical Structures Quiz

The clearest difference is review sentiment: Chemical Structures Quiz at 50% against Üben's 0%. Chemical Structures Quiz also leads on update cadence (every 2 months vs every 11 months). Üben's advantage is price ($0.99 vs $3.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

Üben costs $0.99 and Chemical Structures Quiz $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Üben ships an update every 11 months, Chemical Structures Quiz every 2 months. The most recent releases landed on September 30, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Üben | Chemical Structures Quiz |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 19 MB | 12 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [admaDIC Rainer Schwarze & Annett Schwarze GbR](https://appshunter.io/developer/553282875) | [Marijn Dillen](https://appshunter.io/developer/1276712320) |

## 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


### Chemical Structures Quiz

[App page](https://appshunter.io/ios/app/chemical-structures-quiz/id1397168183)

Test your knowledge of organic and biochemical compounds with multiple-choice quizzes. Learn systematic and common names for hydrocarbons, functional groups, and biomolecules. Ideal for high school students studying chemistry.

**Highlights:** Multiple-choice quizzes, Learn systematic and common names, Covers hydrocarbons, functional groups, biomolecules, Offline functionality, No advertisements

**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 Chemical Structures Quiz free?

Chemical Structures Quiz costs $3.99, with no in-app purchases.

### Do Üben or Chemical Structures Quiz have ads?

Neither Üben nor Chemical Structures Quiz shows ads.

### Which is updated more often, Üben or Chemical Structures Quiz?

Üben ships an update every 11 months, and Chemical Structures Quiz every 2 months. Most recently, Üben was updated on September 30, 2026 and Chemical Structures Quiz 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.*