# Calliope mini vs Westermann Vokabeltrainer

The clearest difference is in-app purchases: Calliope mini at none against Westermann Vokabeltrainer's 10. Calliope mini also leads on update cadence (every 3 months vs every 7 months). On price, review sentiment, ads and monetization model there is nothing between them.

Both are free to download. Westermann Vokabeltrainer sells 10 one-off in-app purchases. Calliope mini asks for nothing beyond the download.

Calliope mini ships an update every 3 months, Westermann Vokabeltrainer every 7 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Calliope mini | Westermann Vokabeltrainer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **25.6% of reviews** | 23.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 7 months |
| Monetization | Free | Free |
| Size | 37 MB | 65 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Calliope gGmbH](https://appshunter.io/developer/1309545544) | [Westermann Digital GmbH](https://appshunter.io/developer/1171669560) |

## What reviewers say

### Calliope mini

[App page](https://appshunter.io/ios/app/calliope-mini/id1309545545)

This app allows users to program a micro-controller to build robots, transmit messages, and make things move. It features LEDs, buttons, sensors, and Bluetooth for creative coding projects.

**Highlights:** Program micro-controller, Build robots, Transmit messages, Control LEDs, Use motion sensor, Bluetooth communication

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

**In-app purchases:** none


### Westermann Vokabeltrainer

[App page](https://appshunter.io/ios/app/westermann-vokabeltrainer/id1473142638)

Learn vocabulary from your Westermann schoolbooks for English and Spanish anytime, anywhere. Features include audio pronunciations, images, example sentences, custom lists, and offline access. Engage with various learning modes like flashcards, quizzes, and tests to master new words.

**Highlights:** Vocabulary from schoolbooks, Audio pronunciations, Images and example sentences, Customizable learning lists, Offline access, Flashcards, quizzes, and tests

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ¿Qué pasa? 1 | Free | one-time |
| Puente al Español 2 | Free | one-time |
| Notting Hill Gate 5 | Free | one-time |
| Camden Market 7 | Free | one-time |
| Camden Town Gymnasium 7 | Free | one-time |
| Puente al Español 3 | Free | one-time |
| Camden Town Gymnasium 8 | Free | one-time |
| Camden Market 8 | Free | one-time |
| Camden Town Oberstufe E BY | Free | one-time |
| Notting Hill Gate 6 | Free | one-time |


## Frequently asked questions

### Is Calliope mini free?

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

### Is Westermann Vokabeltrainer free?

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

### Do Calliope mini or Westermann Vokabeltrainer have ads?

Neither Calliope mini nor Westermann Vokabeltrainer shows ads.

### Which is updated more often, Calliope mini or Westermann Vokabeltrainer?

Calliope mini ships an update every 3 months, and Westermann Vokabeltrainer every 7 months. Most recently, Calliope mini was updated on November 2, 2026 and Westermann Vokabeltrainer on November 3, 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.*