# Calliope mini vs Relution Teacher

The clearest difference is review sentiment: Calliope mini at 26% against Relution Teacher's 0%. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Calliope mini | Relution Teacher |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **25.6% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | Free |
| Size | 37 MB | 39 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Calliope gGmbH](https://appshunter.io/developer/1309545544) | [Relution GmbH](https://appshunter.io/developer/1593405154) |

## 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


### Relution Teacher

[App page](https://appshunter.io/ios/app/relution-teacher/id1596940355)

Streamline classroom management with centralized control over student devices. Pre-configure lesson-specific profiles to automatically adjust apps, web links, and device features for focused learning. Supports ad-hoc and admin modes for flexible teaching and organizational oversight.

**Highlights:** Centralized device management, Lesson-specific profiles, App and web link management, System feature restriction, Ad-hoc and Admin modes, Classroom control

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calliope mini free?

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

### Is Relution Teacher free?

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

### Do Calliope mini or Relution Teacher have ads?

Neither Calliope mini nor Relution Teacher shows ads.

### Which is updated more often, Calliope mini or Relution Teacher?

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