# Calliope mini vs Die Klima App

The clearest difference is update cadence: Die Klima App at every 4 days against Calliope mini's every 3 months. Die Klima App also leads on review sentiment (40% vs 26%) and iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Calliope mini ships an update every 3 months, Die Klima App every 4 days. The most recent releases landed on October 20, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Calliope mini | Die Klima App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/die-klima-app/id1545947682/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 25.6% of reviews | **40.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Free | Free |
| Size | 37 MB | 1.7 GB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Calliope gGmbH](https://appshunter.io/developer/1309545544) | [WDR](https://appshunter.io/developer/728414655) |

## 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


### Die Klima App

[App page](https://appshunter.io/ios/app/die-klima-app/id1545947682)

Experience climate change impacts through immersive augmented reality modules. Learn about flood disasters, ocean pollution, forest fires, and personal stories of those affected by a changing climate. Includes interactive games and factual information.

**Highlights:** Augmented reality flood disaster simulation, Interactive 'Save the Sea' plastic cleanup game, Virtual forest fire experience, Personal stories of climate change impact, Offline functionality, Lesson plans for educators

**In-app purchases:** none


## Frequently asked questions

### Is Calliope mini free?

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

### Is Die Klima App free?

Die Klima App is free to download, with no in-app purchases.

### Do Calliope mini or Die Klima App have ads?

Neither Calliope mini nor Die Klima App shows ads.

### Which is updated more often, Calliope mini or Die Klima App?

Calliope mini ships an update every 3 months, and Die Klima App every 4 days. Most recently, Calliope mini was updated on October 20, 2026 and Die Klima App on October 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.*