# Rocomi, 로코미 vs Book2Board

The clearest difference is price: Rocomi, 로코미 at Free against Book2Board's $1.99. Rocomi, 로코미 also leads on iOS requirement (8.0 vs 26.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Rocomi, 로코미 is free to download; Book2Board costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Rocomi, 로코미 ships an update every 5 months, Book2Board every 3 months. The most recent releases landed on October 4, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Rocomi, 로코미 | Book2Board |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 76 MB | 89 MB |
| Requires iOS | **8.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Life &Science Co.,Ltd.](https://appshunter.io/developer/1121866034) | [Rhinolabs Agency LLC](https://appshunter.io/developer/1860987245) |

## What reviewers say

### Rocomi, 로코미

[App page](https://appshunter.io/ios/app/rocomi/id1280194660)

Learn basic coding through interactive tutorials and control robotic sensors. This app uses a drag-and-drop interface, making coding simpler than Scratch. It enables control of the main board and various sensors of Robotori via Bluetooth 4.0.

**Highlights:** Learn basic coding, Tutorial format, Control Robotori sensors, Drag and drop interface, Bluetooth 4.0 support

**Features:** macOS Compatibility

**In-app purchases:** none


### Book2Board

[App page](https://appshunter.io/ios/app/book2board-chess-book-study/id6756503877)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rocomi, 로코미 free?

Rocomi, 로코미 is free to download, with no in-app purchases.

### Is Book2Board free?

Book2Board costs $1.99, with no in-app purchases.

### Do Rocomi, 로코미 or Book2Board have ads?

Neither Rocomi, 로코미 nor Book2Board shows ads.

### Which is updated more often, Rocomi, 로코미 or Book2Board?

Rocomi, 로코미 ships an update every 5 months, and Book2Board every 3 months. Most recently, Rocomi, 로코미 was updated on October 4, 2026 and Book2Board on October 14, 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.*