# Grammatik Duell vs Charles Darwin

The clearest difference is review sentiment: Grammatik Duell at 25% against Charles Darwin's 0%. Grammatik Duell also leads on update cadence (every 2 months vs every 6 months) and price ($0.99 vs $1.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

Grammatik Duell costs $0.99 and Charles Darwin $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Grammatik Duell ships an update every 2 months, Charles Darwin every 6 months. The most recent releases landed on September 7, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Grammatik Duell | Charles Darwin |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Positive reviews | **25.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Paid | Paid |
| Size | 15 MB | 44 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPad, Mac, Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [Jan Essig](https://appshunter.io/developer/446378172) | [Ventura Educational Systems](https://appshunter.io/developer/371324172) |

## What reviewers say

### Grammatik Duell

[App page](https://appshunter.io/ios/app/grammatik-duell/id968774654)

Practice German grammar and spelling through an engaging matching game. Choose from various grammatical areas and difficulty levels to improve your language skills. Compete against yourself or others in this fun, educational duel.

**Highlights:** German grammar and spelling practice, Matching game mechanics, Variable card pairs and player numbers, Adjustable difficulty levels, Read-aloud function, Focuses on grammatical areas, Reward system for motivation

**Features:** macOS Compatibility

**In-app purchases:** none


### Charles Darwin

[App page](https://appshunter.io/ios/app/charles-darwin-evolution/id1425175548)

Embark on Charles Darwin's historic voyage aboard the HMS Beagle. Explore maps, diagrams, and text detailing his discoveries and the science of evolution. Test your knowledge with an included quiz.

**Highlights:** Trace HMS Beagle's voyage, Learn about Darwin's discoveries, Explore maps and diagrams, Study the science of evolution, Test knowledge with a quiz

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Grammatik Duell free?

Grammatik Duell costs $0.99, with no in-app purchases.

### Is Charles Darwin free?

Charles Darwin costs $1.99, with no in-app purchases.

### Do Grammatik Duell or Charles Darwin have ads?

Neither Grammatik Duell nor Charles Darwin shows ads.

### Which is updated more often, Grammatik Duell or Charles Darwin?

Grammatik Duell ships an update every 2 months, and Charles Darwin every 6 months. Most recently, Grammatik Duell was updated on September 7, 2026 and Charles Darwin on September 10, 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.*