# Electrical Engineering Review vs C# Data Structures & Algo Pro

The clearest difference is price: Electrical Engineering Review at Free against C# Data Structures & Algo Pro's $4.99. Electrical Engineering Review also leads on iOS requirement (14.0 vs 16.0). C# Data Structures & Algo Pro's advantage is update cadence (every 4 months vs every 18 months). On ads, in-app purchases and device support there is nothing between them.

Electrical Engineering Review is free to download; C# Data Structures & Algo Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electrical Engineering Review ships an update every 18 months, C# Data Structures & Algo Pro every 4 months. The most recent releases landed on September 5, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Electrical Engineering Review | C# Data Structures & Algo Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 4 months** |
| Size | 446 MB | 19 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 17+ | 4+ |
| Developer | [Rex Banggawan](https://appshunter.io/developer/1516403954) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Electrical Engineering Review

[App page](https://appshunter.io/ios/app/electrical-engineering-review/id6502630073)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### C# Data Structures & Algo Pro

[App page](https://appshunter.io/ios/app/c-data-structures-and-algo-pro/id6756675050)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Electrical Engineering Review free?

Electrical Engineering Review is free to download, with no in-app purchases.

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

C# Data Structures & Algo Pro costs $4.99, with no in-app purchases.

### Do Electrical Engineering Review or C# Data Structures & Algo Pro have ads?

Neither Electrical Engineering Review nor C# Data Structures & Algo Pro shows ads.

### Which is updated more often, Electrical Engineering Review or C# Data Structures & Algo Pro?

Electrical Engineering Review ships an update every 18 months, and C# Data Structures & Algo Pro every 4 months. Most recently, Electrical Engineering Review was updated on September 5, 2026 and C# Data Structures & Algo Pro on September 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.*