# Handy Bluetooth Arduino Controller vs BlueGrays

The clearest difference is rating: BlueGrays at 4.4 against Handy Bluetooth Arduino Controller's 3.7. BlueGrays also leads on update cadence (every 6 days vs every 6 weeks) and ratings volume (11 vs 3). Handy Bluetooth Arduino Controller's advantage is in-app purchases (none vs 6) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. BlueGrays sells 6 in-app purchases, starting at $2.99 per month. Handy Bluetooth Arduino Controller asks for nothing beyond the download.

BlueGrays holds the better App Store score, 4.4 against 3.7. Both are backed by a comparable volume of ratings — 3 and 11 respectively. Written reviews complicate that: 83% of Handy Bluetooth Arduino Controller's written reviews are positive against 64% of BlueGrays's, so the app with the better star average is not the one people write more warmly about.

Handy Bluetooth Arduino Controller ships an update every 6 weeks, BlueGrays every 6 days. The most recent releases landed on October 15, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Handy Bluetooth Arduino Controller | BlueGrays |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/handy-bluetooth-arduino-controller/id985786496/reviews) | **[4.4 (11 ratings)](https://appshunter.io/ios/app/bluegrays-learn-electronics/id6502332602/reviews)** |
| Number of ratings | 3 | **11** |
| Positive reviews | **83.3% of reviews** | 64.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 51 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Paul Shelley](https://appshunter.io/developer/977399574) | [Yunus Emre Eke](https://appshunter.io/developer/1713998736) |

## What reviewers say

### Handy Bluetooth Arduino Controller

[App page](https://appshunter.io/ios/app/handy-bluetooth-arduino-controller/id985786496)

Design custom iPhone interfaces to control your electronics projects via Bluetooth Low Energy. Easily create and customize buttons to send commands to your Arduino devices without needing to code for iOS.

**Highlights:** Customizable Bluetooth interfaces, Control Arduino projects, No iOS programming required, Console/Terminal functionality, Send and receive messages, Arduino example sketch included

**Features:** macOS Compatibility

**In-app purchases:** none


### BlueGrays

[App page](https://appshunter.io/ios/app/bluegrays-learn-electronics/id6502332602)

Learn electronics with interactive projects, a component catalog, and personal inventory management. Start with free projects and unlock full access to Arduino, ESP32, and IoT content with a premium subscription. Gamified learning with badges and levels keeps you motivated.

**Highlights:** Free starter projects, Unlimited Arduino/ESP32/IoT projects, Detailed circuit diagrams and code, Component catalog with specifications, Personal inventory management, Gamified learning with badges and levels, Multi-language support

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $2.99 | per month |
| Premium (Yearly) | $11.99 | per year |
| 5x Aylık Eğitimci Paketi | $12.99 | one-time |
| 10x Aylık Eğitimci Paketi | $23.99 | one-time |
| 5x Yıllık Eğitimci Paketi | $53.99 | one-time |
| 10x Yıllık Eğitimci Paketi | $101.99 | one-time |


## Frequently asked questions

### Is Handy Bluetooth Arduino Controller free?

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

### Is BlueGrays free?

BlueGrays is free to download, with in-app purchases available.

### Which has better reviews, Handy Bluetooth Arduino Controller or BlueGrays?

BlueGrays is rated higher. Handy Bluetooth Arduino Controller averages 3.7 out of 5 from 3 ratings, while BlueGrays averages 4.4 from 11 ratings.

### Do Handy Bluetooth Arduino Controller or BlueGrays have ads?

BlueGrays shows ads; Handy Bluetooth Arduino Controller does not.

### Which is updated more often, Handy Bluetooth Arduino Controller or BlueGrays?

Handy Bluetooth Arduino Controller ships an update every 6 weeks, and BlueGrays every 6 days. Most recently, Handy Bluetooth Arduino Controller was updated on October 15, 2026 and BlueGrays on September 17, 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.*