# Grammatik Duell vs Grandmind

The clearest difference is review sentiment: Grandmind at 100% against Grammatik Duell's 25%. Grandmind also leads on price (Free vs $0.99) and update cadence (every 4 days vs every 2 months). Grammatik Duell's advantage is ads (none vs shown) and iOS requirement (12.0 vs 17.6). On in-app purchases and device support there is nothing between them.

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

Grammatik Duell ships an update every 2 months, Grandmind every 4 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Grammatik Duell | Grandmind |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Paid | **Free** |
| Size | 15 MB | 26 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Jan Essig](https://appshunter.io/developer/446378172) | [Kok Keong](https://appshunter.io/developer/1643079389) |

## 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


### Grandmind

[App page](https://appshunter.io/ios/app/grandmind-brain-training/id6751628728)

This brain game challenges your recall by having you repeat increasingly complex sequences of colors and sounds. Compete globally on leaderboards to test your memory and focus.

**Highlights:** Sequence repetition, Color and sound patterns, Global leaderboards, Daily brain training, Quick play sessions

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, 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 Grandmind free?

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

### Do Grammatik Duell or Grandmind have ads?

Grandmind shows ads; Grammatik Duell does not.

### Which is updated more often, Grammatik Duell or Grandmind?

Grammatik Duell ships an update every 2 months, and Grandmind every 4 days. Most recently, Grammatik Duell was updated on November 1, 2026 and Grandmind 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.*