# Arduino Bluetooth Pro vs JSON Master

The clearest difference is price: Arduino Bluetooth Pro at Free against JSON Master's $3.99. Arduino Bluetooth Pro also leads on iOS requirement (12.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Arduino Bluetooth Pro is free to download; JSON Master costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Arduino Bluetooth Pro | JSON Master |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.6 (20 ratings)](https://appshunter.io/ios/app/arduino-bluetooth-pro/id1111181830/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Paid | — |
| Size | 105 MB | 3 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Bad Assassin Games](https://appshunter.io/developer/556279629) | [Volodymyr Sichka](https://appshunter.io/developer/1125187457) |

## What reviewers say

### Arduino Bluetooth Pro

[App page](https://appshunter.io/ios/app/arduino-bluetooth-pro/id1111181830)

Control Arduino projects via Bluetooth with a customizable interface. Send and receive data, use voice commands for keywords, and monitor serial communication. Ideal for IoT projects, robotics, and smart devices.

**Highlights:** Customizable Bluetooth control, Send/Receive data, Voice command support, Serial monitor, Automatic device search, D-pad control

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

**In-app purchases:** none


### JSON Master

[App page](https://appshunter.io/ios/app/json-master/id6799075435)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Arduino Bluetooth Pro free?

Arduino Bluetooth Pro is free to download, with no in-app purchases.

### Is JSON Master free?

JSON Master costs $3.99, with no in-app purchases.

### Do Arduino Bluetooth Pro or JSON Master have ads?

Neither Arduino Bluetooth Pro nor JSON Master shows ads.

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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.*