# Calliope mini vs Relution Parent

The clearest difference is review sentiment: Calliope mini at 26% against Relution Parent's 0%. Calliope mini also leads on update cadence (every 3 months vs every 10 months). Relution Parent's advantage is 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, Relution Parent every 10 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Calliope mini | Relution Parent |
| --- | --- | --- |
| 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 10 months |
| Monetization | Free | Free |
| Size | 37 MB | 38 MB |
| 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) | [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 Parent

[App page](https://appshunter.io/ios/app/relution-parent/id6477530198)

This app allows parents to manage their children's device usage, controlling which applications are accessible outside of school hours. It facilitates remote app selection and blocking, enhancing child protection in the digital world.

**Highlights:** Remote app management, App blocking and unblocking, Comprehensive device overview, Flexible control options, Data sovereignty and protection, Manage multiple children, Cross-school compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calliope mini free?

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

### Is Relution Parent free?

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

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

Neither Calliope mini nor Relution Parent shows ads.

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

Calliope mini ships an update every 3 months, and Relution Parent every 10 months. Most recently, Calliope mini was updated on November 2, 2026 and Relution Parent on November 4, 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.*