Calliope mini vs AR Books LibrARy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calliope mini
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.
- Program micro-controller
- Build robots
- Transmit messages
- Control LEDs
- Use motion sensor
- Bluetooth communication
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With Calliope mini you have countless creative options right at your fingertips. You want to build a robot or transmit messages? With just a few clicks you can create a program for the controller and make things move. Besides 25 red plus three RGB-LEDs and two programmable buttons the board contains a combined position sensor with motion sensor and compass as well as a bluetooth module that allows the Calliope mini to communicate with other devices.
AR Books LibrARy
This app brings printed books to life with augmented reality. Scan a code from your book, then point your device's camera at specific pages to see interactive AR content. It requires a physical book to function.
- Augmented Reality content
- Requires printed book
- Code activation for publications
- Device camera integration
- Interactive book experiences
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A printed book is required for the application to work. You can access the Augmented Reality (AR) contents after entering the code for the book in the application. After activating the publication, point the rear camera of your device at the marked part of the printed book to display the augmented reality contents. Further information regarding the application and the AR contents can be found on our website: https://store.arbookslibrary.com/
Screenshots
Verdict
The clearest difference is update cadence: AR Books LibrARy at monthly against Calliope mini's every 3 months. On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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, AR Books LibrARy monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Calliope mini | AR Books LibrARy |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 25.6% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 37 MB | 225 MB |
| Age rating | 4+ | 4+ |
| Developer | Calliope gGmbH | Multilearn Digitalis Tartalomszolgaltato es Kiado Korlatolt Felelossegu Tarsasag |
Customer experience
Calliope mini
AR Books LibrARy
In-app purchases
Calliope mini
No in-app purchases
AR Books LibrARy
No in-app purchases
Questions
Is Calliope mini free?
Is AR Books LibrARy free?
Do Calliope mini or AR Books LibrARy have ads?
Which is updated more often, Calliope mini or AR Books LibrARy?
Other comparisons
