# Calliope mini vs KNOWBODY

The clearest difference is review sentiment: KNOWBODY at 67% against Calliope mini's 26%. KNOWBODY also leads on update cadence (every 3 weeks vs every 3 months) and iOS requirement (13.0 vs 15.0). Calliope mini's advantage is in-app purchases (none vs 1). On price, ads and device support there is nothing between them.

Both are free to download. KNOWBODY sells 1 one-off in-app purchase. Calliope mini asks for nothing beyond the download.

Calliope mini ships an update every 3 months, KNOWBODY every 3 weeks. The most recent releases landed on November 2, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Calliope mini | KNOWBODY |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 25.6% of reviews | **66.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 37 MB | 138 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Calliope gGmbH](https://appshunter.io/developer/1309545544) | [KNOWBODY UG (haftungsbeschränkt)](https://appshunter.io/developer/1562328903) |

## 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


### KNOWBODY

[App page](https://appshunter.io/ios/app/knowbody/id1562328901)

This app provides sexual education resources for secondary schools, suitable for all German states from 6th grade. Teachers and interested individuals can test it for free for 8 days.

**Highlights:** Sexual education content, Suitable for secondary schools (6th grade+), Bundensland-independent, Free 8-day trial for teachers, Login with Univention (Bremen)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Familienlizenz | $12.99 | one-time |


## Frequently asked questions

### Is Calliope mini free?

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

### Is KNOWBODY free?

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

### Do Calliope mini or KNOWBODY have ads?

Neither Calliope mini nor KNOWBODY shows ads.

### Which is updated more often, Calliope mini or KNOWBODY?

Calliope mini ships an update every 3 months, and KNOWBODY every 3 weeks. Most recently, Calliope mini was updated on November 2, 2026 and KNOWBODY on November 13, 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.*