# BlueGrays vs SwipeDrill

The clearest difference is iOS requirement: SwipeDrill at 13.0 against BlueGrays's 15.1. On price, ads, in-app purchases 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 and SwipeDrill sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | BlueGrays | SwipeDrill |
| --- | --- | --- |
| Price | Free | 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 | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 51 MB | 30 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yunus Emre Eke](https://appshunter.io/developer/1713998736) | [kenji kuroki](https://appshunter.io/developer/1834943683) |

## What reviewers say

### 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 |


### SwipeDrill

[App page](https://appshunter.io/ios/app/swipedrill-python/id6777545269)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Premium | $3.99 | one-time |


## Frequently asked questions

### Is BlueGrays free?

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

### Is SwipeDrill free?

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

### Do BlueGrays or SwipeDrill have ads?

Both BlueGrays and SwipeDrill show 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.*