# Electronic Circuits Calculator vs BlueGrays

The clearest difference is review sentiment: BlueGrays at 64% against Electronic Circuits Calculator's 0%. BlueGrays also leads on update cadence (every 6 days vs every 2 months). Electronic Circuits Calculator's advantage is in-app purchases (none vs 6). 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. Electronic Circuits Calculator asks for nothing beyond the download.

Electronic Circuits Calculator ships an update every 2 months, BlueGrays every 6 days. The most recent releases landed on August 27, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Electronic Circuits Calculator | BlueGrays |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (11 ratings)](https://appshunter.io/ios/app/bluegrays-learn-electronics/id6502332602/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | 0.0% of reviews | **64.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 21 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

### Electronic Circuits Calculator

[App page](https://appshunter.io/ios/app/electronic-circuits-calculator/id6444422711)

This comprehensive electronics toolkit offers over 130 interactive calculators, circuit tools, and guides. It's designed for users of all levels, from beginners to professionals, to assist with learning, prototyping, and quick calculations in electronics engineering.

**Highlights:** Over 130 interactive calculators, Circuit tools and guides, Step-by-step explanations and formulas, Ideal for learning and prototyping, Light and dark mode support, Available in 14 languages

**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 Electronic Circuits Calculator free?

Electronic Circuits Calculator is free to download, with no in-app purchases.

### Is BlueGrays free?

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

### Do Electronic Circuits Calculator or BlueGrays have ads?

Both Electronic Circuits Calculator and BlueGrays show ads.

### Which is updated more often, Electronic Circuits Calculator or BlueGrays?

Electronic Circuits Calculator ships an update every 2 months, and BlueGrays every 6 days. Most recently, Electronic Circuits Calculator 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.*