# microbitBLE vs HP Otto

The clearest difference is iOS requirement: HP Otto at 13.0 against microbitBLE's 15.5. 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.

microbitBLE ships an update every 2 months, HP Otto every 3 months. The most recent releases landed on September 29, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | microbitBLE | HP Otto |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/microbitble/id1635024315/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | — |
| Size | 2 MB | 202 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Atsushi Yamada](https://appshunter.io/developer/301497489) | [MORAVIA Consulting, spol. s r.o.](https://appshunter.io/developer/1673101600) |

## What reviewers say

### microbitBLE

[App page](https://appshunter.io/ios/app/microbitble/id1635024315)

Connect your smartphone to a micro:bit device via Bluetooth. Send text from your keyboard to display on the micro:bit's LED, and receive messages sent from the micro:bit. Ideal for interactive coding projects and learning.

**Highlights:** Bluetooth UART connection, Send text to micro:bit LED, Receive messages from micro:bit, Button press triggers messages, Interactive coding projects

**Features:** Vision Pro support

**In-app purchases:** none


### HP Otto

[App page](https://appshunter.io/ios/app/hp-otto/id6745776468)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is microbitBLE free?

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

### Is HP Otto free?

HP Otto is free to download, with no in-app purchases.

### Do microbitBLE or HP Otto have ads?

Neither microbitBLE nor HP Otto shows ads.

### Which is updated more often, microbitBLE or HP Otto?

microbitBLE ships an update every 2 months, and HP Otto every 3 months. Most recently, microbitBLE was updated on September 29, 2026 and HP Otto on September 12, 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.*