# 8051 Tutorial vs Gwtar Viewer

The clearest difference is in-app purchases: Gwtar Viewer at none against 8051 Tutorial's 10. 8051 Tutorial's advantage is iOS requirement (12.0 vs 14.0). On price, ads and device support there is nothing between them.

Both are free to download. 8051 Tutorial sells 10 one-off in-app purchases. Gwtar Viewer asks for nothing beyond the download.

## The numbers

| Metric | 8051 Tutorial | Gwtar Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/8051-tutorial/id1043830861/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 8 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [Yasuhiro Yamada](https://appshunter.io/developer/1503076203) |

## What reviewers say

### 8051 Tutorial

[App page](https://appshunter.io/ios/app/8051-tutorial/id1043830861)

Learn 8051 microcontroller programming in C with this comprehensive tutorial. It covers architecture, assembly, and C language, featuring 11 practical projects. An optional Pro version offers additional projects with source code and advanced features.

**Highlights:** 8051 architecture review, 8051 assembly mnemonics, 8051 C language programming, 11 practical projects, Baud calculator, Pro version with extra projects and source code

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 24L01 | $0.99 | one-time |
| 18B20 | $0.99 | one-time |
| OLED | $0.99 | one-time |
| Unlock Pro features | $1.99 | one-time |
| ESP8266 | $1.99 | one-time |
| BMP180 project | $1.99 | one-time |
| DHT11 project | $1.99 | one-time |
| DHT22 project | $1.99 | one-time |
| BMP280 project | $1.99 | one-time |
| Wireless automation (BT) | $1.99 | one-time |


### Gwtar Viewer

[App page](https://appshunter.io/ios/app/gwtar-viewer/id6792750702)

**In-app purchases:** none


## Frequently asked questions

### Is 8051 Tutorial free?

8051 Tutorial is free to download, with in-app purchases available.

### Is Gwtar Viewer free?

Gwtar Viewer is free to download, with no in-app purchases.

### Do 8051 Tutorial or Gwtar Viewer have ads?

Neither 8051 Tutorial nor Gwtar Viewer shows 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.*