# C# .NET vs Learn ErLang | ErLangBook

The clearest difference is price: C# .NET at Free against Learn ErLang | ErLangBook's $2.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

C# .NET is free to download; Learn ErLang | ErLangBook costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

C# .NET ships an update every 8 months, Learn ErLang | ErLangBook every 6 months. The most recent releases landed on October 30, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | C# .NET | Learn ErLang | ErLangBook |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/c-net-coding-practice/id6502996345/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 months** |
| Monetization | Free | — |
| Size | 30 MB | 74 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Denis Kazakov](https://appshunter.io/developer/1439731262) | [Muhammad Umair](https://appshunter.io/developer/1696049320) |

## What reviewers say

### C# .NET

[App page](https://appshunter.io/ios/app/c-net-coding-practice/id6502996345)

Learn C# and .NET development through interactive coding challenges. This app offers hundreds of expert-curated tasks categorized by skill level and topic, perfect for improving your programming abilities.

**Highlights:** Interactive programming tasks, Hundreds of practice exercises, Categorized by skill level, Focus on C#/.NET, Expert-selected content

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

**In-app purchases:** none


### Learn ErLang | ErLangBook

[App page](https://appshunter.io/ios/app/learn-erlang-erlangbook/id6754662195)

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

**In-app purchases:** none


## Frequently asked questions

### Is C# .NET free?

C# .NET is free to download, with no in-app purchases.

### Is Learn ErLang | ErLangBook free?

Learn ErLang | ErLangBook costs $2.99, with no in-app purchases.

### Do C# .NET or Learn ErLang | ErLangBook have ads?

Neither C# .NET nor Learn ErLang | ErLangBook shows ads.

### Which is updated more often, C# .NET or Learn ErLang | ErLangBook?

C# .NET ships an update every 8 months, and Learn ErLang | ErLangBook every 6 months. Most recently, C# .NET was updated on October 30, 2026 and Learn ErLang | ErLangBook on November 9, 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.*