# Der Kestner vs GuK

The clearest difference is review sentiment: GuK at 100% against Der Kestner's 73%. GuK also leads on update cadence (every 5 days vs every 3 weeks) and iOS requirement (12.0 vs 16.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Der Kestner sells 8 in-app purchases, starting at $3.99 per month and GuK sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Der Kestner ships an update every 3 weeks, GuK every 5 days. The most recent releases landed on September 11, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Der Kestner | GuK |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 73.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 107 MB | 186 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Verlag Karin Kestner GmbH](https://appshunter.io/developer/1673366576) | [Deutsches Down-Syndrom InfoCenter](https://appshunter.io/developer/1792864018) |

## What reviewers say

### Der Kestner

[App page](https://appshunter.io/ios/app/der-kestner-dgs/id6445823997)

This app is a comprehensive dictionary for German Sign Language (DGS), offering over 29,000 terms and 400 sign videos. It includes learning tools, custom list creation, and image editing for educational materials. Accessible across devices with regular updates.

**Highlights:** Extensive DGS vocabulary with over 29,000 terms, 400+ sign language videos, Vocabulary trainer and custom list creation, Image editor for creating educational materials, Search and filter functions, Cross-device accessibility (app and web)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basis | $3.99 | per month |
| Premium | $6.99 | per month |
| Für Familien | $11.99 | per month |
| Veraltetes Abo | $14.99 | per month |
| Stufe 5 | $39.99 | per month |
| Basis | $44.90 | per year |
| Premium | $69.90 | per year |
| Für Familien | $119.99 | per year |


### GuK

[App page](https://appshunter.io/ios/app/guk/id6741070160)

This app supports children learning spoken language through sign language. It offers over 200 video-based signs, organized by topic or alphabetically, with interactive learning modes and songs. Designed for parents, educators, and therapists to aid communication development.

**Highlights:** Over 200 video-based signs, Searchable sign library, Customizable sign lists, Quiz and practice modes, Songs with accompanying signs, Intuitive interface

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GuK Plus | $8.99 | one-time |
| GuK 1 | $24.99 | one-time |
| GuK 2 | $24.99 | one-time |
| GuK Gesamtpaket | $49.99 | one-time |


## Frequently asked questions

### Is Der Kestner free?

Der Kestner is free to download, with in-app purchases available.

### Is GuK free?

GuK is free to download, with in-app purchases available.

### Do Der Kestner or GuK have ads?

Neither Der Kestner nor GuK shows ads.

### Which is updated more often, Der Kestner or GuK?

Der Kestner ships an update every 3 weeks, and GuK every 5 days. Most recently, Der Kestner was updated on September 11, 2026 and GuK on September 22, 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.*