# Digital Electronics Guide vs BlueGrays

The clearest difference is rating: Digital Electronics Guide at 5.0 against BlueGrays's 4.4. Digital Electronics Guide also leads on review sentiment (100% vs 64%) and in-app purchases (none vs 6). BlueGrays's advantage is update cadence (every 6 days vs every 5 weeks) and ratings volume (11 vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. BlueGrays sells 6 in-app purchases, starting at $2.99 per month. Digital Electronics Guide asks for nothing beyond the download.

Digital Electronics Guide holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: BlueGrays has 11 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Digital Electronics Guide's written reviews are positive against 64% of BlueGrays's.

Digital Electronics Guide ships an update every 5 weeks, BlueGrays every 6 days. The most recent releases landed on August 27, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Digital Electronics Guide | BlueGrays |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/digital-electronics-guide/id6478166232/reviews)** | [4.4 (11 ratings)](https://appshunter.io/ios/app/bluegrays-learn-electronics/id6502332602/reviews) |
| Number of ratings | 2 | **11** |
| Positive reviews | **100.0% of reviews** | 64.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Every 6 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 24 MB | 51 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | 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 Guide

[App page](https://appshunter.io/ios/app/digital-electronics-guide/id6478166232)

This app serves as a comprehensive reference for digital electronics, covering essential theory and practical guides. It's designed for students, engineers, and hobbyists to learn and prototype digital circuits with ease. Features include detailed information on logic gates, IC families, and various digital components.

**Highlights:** Logic gate tutorials, IC reference data (TTL 7400, CMOS 4000), Digital circuit design and prototyping, Covers counters, flip-flops, and more, Available in 14 languages, Detailed tutorials and references

**Features:** macOS Compatibility, 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 Guide free?

Digital Electronics Guide 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, Digital Electronics Guide or BlueGrays?

Digital Electronics Guide is rated higher. Digital Electronics Guide averages 5.0 out of 5 from 2 ratings, while BlueGrays averages 4.4 from 11 ratings.

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

Both Digital Electronics Guide and BlueGrays show ads.

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

Digital Electronics Guide ships an update every 5 weeks, and BlueGrays every 6 days. Most recently, Digital Electronics Guide was updated on August 27, 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.*