# MicroBlue vs CloudDiagnostix ToZero

MicroBlue and CloudDiagnostix ToZero are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | MicroBlue | CloudDiagnostix ToZero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/microblue/id6469052831/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | — |
| Size | 16 MB | 53 MB |
| Requires iOS | 13.4 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mechanismic Inc.](https://appshunter.io/developer/1065657087) | [Doruk Arslan](https://appshunter.io/developer/1584940273) |

## What reviewers say

### MicroBlue

[App page](https://appshunter.io/ios/app/microblue/id6469052831)

This app connects to microcontrollers via Bluetooth/BLE, offering a customizable interface for control and interaction. It supports various components like joysticks and buttons, streamlining hobbyist and professional projects.

**Highlights:** Bluetooth/BLE connectivity, Customizable control interface, D-pads, joysticks, buttons, sliders, Text input support, Works with Arduino and Raspberry Pi, Writable custom service communication

**Features:** macOS Compatibility

**In-app purchases:** none


### CloudDiagnostix ToZero

[App page](https://appshunter.io/ios/app/clouddiagnostix-tozero/id6648793268)

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

**In-app purchases:** none


## Frequently asked questions

### Is MicroBlue free?

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

### Is CloudDiagnostix ToZero free?

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

### Do MicroBlue or CloudDiagnostix ToZero have ads?

Neither MicroBlue nor CloudDiagnostix ToZero shows ads.

### Which is updated more often, MicroBlue or CloudDiagnostix ToZero?

MicroBlue ships an update every 3 months, and CloudDiagnostix ToZero every 3 months. Most recently, MicroBlue was updated on October 24, 2026 and CloudDiagnostix ToZero 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.*