# Skarp vs C# Data Structures & Algo

The clearest difference is in-app purchases: C# Data Structures & Algo at none against Skarp's 6. C# Data Structures & Algo also leads on ads (none vs shown). Skarp's advantage is update cadence (weekly vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Skarp sells 6 in-app purchases, starting at $9.99 per month. C# Data Structures & Algo asks for nothing beyond the download.

Skarp ships an update weekly, C# Data Structures & Algo every 2 months. Both last shipped on October 28, 2026.

## The numbers

| Metric | Skarp | C# Data Structures & Algo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 2 months |
| Size | 21 MB | 19 MB |
| Requires iOS | 18.1 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Linclaw Consulting AB](https://appshunter.io/developer/1445425456) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Skarp

[App page](https://appshunter.io/ios/app/skarp-courses-and-cert-prep/id6756305471)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Skarp Pass Premium | $9.99 | per month |
| Pro Pass Monthly | $19.99 | per month |
| Skarp Credits | $2.99 | one-time |
| Skarp Credits | $5.99 | one-time |
| Skarp Credits | $14.99 | one-time |
| Skarp Credits | $29.99 | one-time |


### C# Data Structures & Algo

[App page](https://appshunter.io/ios/app/c-data-structures-and-algo/id6756707070)

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

**In-app purchases:** none


## Frequently asked questions

### Is Skarp free?

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

### Is C# Data Structures & Algo free?

C# Data Structures & Algo is free to download, with no in-app purchases.

### Do Skarp or C# Data Structures & Algo have ads?

Skarp shows ads; C# Data Structures & Algo does not.

### Which is updated more often, Skarp or C# Data Structures & Algo?

Skarp ships an update weekly, and C# Data Structures & Algo every 2 months. Most recently, Skarp was updated on October 28, 2026 and C# Data Structures & Algo on October 28, 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.*