# Digital Electronics Pro vs BlueGrays

The clearest difference is price: BlueGrays at Free against Digital Electronics Pro's $4.99. BlueGrays also leads on update cadence (every 6 days vs every 2 months). Digital Electronics Pro's advantage is in-app purchases (none vs 6) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

BlueGrays is free to download; Digital Electronics Pro costs $4.99 up front. BlueGrays sells 6 in-app purchases, starting at $2.99 per month. Digital Electronics Pro asks for nothing beyond the download.

Digital Electronics Pro ships an update every 2 months, BlueGrays every 6 days. The most recent releases landed on September 16, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Digital Electronics Pro | BlueGrays |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[4.4 (11 ratings)](https://appshunter.io/ios/app/bluegrays-learn-electronics/id6502332602/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 64.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | — | Free with in-app purchases |
| Size | 21 MB | 51 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ALG Software Lab](https://appshunter.io/developer/1650561236) | [Yunus Emre Eke](https://appshunter.io/developer/1713998736) |

## What reviewers say

### Digital Electronics Pro

[App page](https://appshunter.io/ios/app/digital-electronics-pro/id6478407802)

**Features:** Vision Pro support

**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 Digital Electronics Pro free?

Digital Electronics Pro costs $4.99, with no in-app purchases.

### Is BlueGrays free?

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

### Do Digital Electronics Pro or BlueGrays have ads?

BlueGrays shows ads; Digital Electronics Pro does not.

### Which is updated more often, Digital Electronics Pro or BlueGrays?

Digital Electronics Pro ships an update every 2 months, and BlueGrays every 6 days. Most recently, Digital Electronics Pro was updated on September 16, 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.*