# C++ Data Structures & Algo Pro vs BigO Algorithms

The clearest difference is price: BigO Algorithms at Free against C++ Data Structures & Algo Pro's $4.99. BigO Algorithms also leads on update cadence (every 4 days vs every 3 months). C++ Data Structures & Algo Pro's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

BigO Algorithms is free to download; C++ Data Structures & Algo Pro costs $4.99 up front. BigO Algorithms sells 2 in-app purchases, starting at $7.99 per month. C++ Data Structures & Algo Pro asks for nothing beyond the download.

C++ Data Structures & Algo Pro ships an update every 3 months, BigO Algorithms every 4 days. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | C++ Data Structures & Algo Pro | BigO Algorithms |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/bigo-algorithms/id6761836617/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 25 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ALG Software Lab](https://appshunter.io/developer/1650561236) | [Gregori Farias](https://appshunter.io/developer/1891708605) |

## What reviewers say

### C++ Data Structures & Algo Pro

[App page](https://appshunter.io/ios/app/c-plus-plus-data-structures-and-algo-pro/id6756353972)

**Features:** Vision Pro support

**In-app purchases:** none


### BigO Algorithms

[App page](https://appshunter.io/ios/app/bigo-algorithms/id6761836617)

This app provides a technical environment for software engineers and computer science students to prepare for interviews. It uses AI-powered mentorship and visual complexity curves to help users understand logic and analyze code errors.

**Highlights:** AI-powered mentorship, Dual-clue analysis (Static Blueprints & OpenAI), Big O complexity curve visualization, Dark-mode first aesthetic, Code error analysis, Logic-focused learning

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BigO Premium Monthly | $7.99 | per month |
| BigO Premium Annual | $57.99 | per year |


## Frequently asked questions

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

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

### Is BigO Algorithms free?

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

### Do C++ Data Structures & Algo Pro or BigO Algorithms have ads?

Neither C++ Data Structures & Algo Pro nor BigO Algorithms shows ads.

### Which is updated more often, C++ Data Structures & Algo Pro or BigO Algorithms?

C++ Data Structures & Algo Pro ships an update every 3 months, and BigO Algorithms every 4 days. Most recently, C++ Data Structures & Algo Pro was updated on October 12, 2026 and BigO Algorithms on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*