# C++ Data Structures & Algo vs CS++ AP CSA

The clearest difference is in-app purchases: C++ Data Structures & Algo at none against CS++ AP CSA's 1. CS++ AP CSA's advantage is update cadence (every 3 weeks vs every 3 months) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. CS++ AP CSA sells 1 one-off in-app purchase. C++ Data Structures & Algo asks for nothing beyond the download.

C++ Data Structures & Algo ships an update every 3 months, CS++ AP CSA every 3 weeks. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | C++ Data Structures & Algo | CS++ AP CSA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/cs-plus-plus-ap-csa/id6763950108/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 50 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ALG Software Lab](https://appshunter.io/developer/1650561236) | [Kevin Hare](https://appshunter.io/developer/1343264116) |

## What reviewers say

### C++ Data Structures & Algo

[App page](https://appshunter.io/ios/app/c-plus-plus-data-structures-and-algo/id6756428007)

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

**In-app purchases:** none


### CS++ AP CSA

[App page](https://appshunter.io/ios/app/cs-plus-plus-ap-csa/id6763950108)

This app provides a comprehensive AP Computer Science A course, featuring offline Java execution, practice questions, and coding challenges. It covers all 11 units of the College Board curriculum with detailed explanations and error callouts. Progress is saved locally, ensuring privacy and accessibility without an internet connection.

**Highlights:** Offline Java runtime, 11 AP CSA course units, Hundreds of practice questions, Inline Java coding challenges, Topic-by-topic explanations, Progress saved on-device, No account or tracking

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Full AP CSA Course | $9.99 | one-time |


## Frequently asked questions

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

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

### Is CS++ AP CSA free?

CS++ AP CSA is free to download, with in-app purchases available.

### Do C++ Data Structures & Algo or CS++ AP CSA have ads?

Neither C++ Data Structures & Algo nor CS++ AP CSA shows ads.

### Which is updated more often, C++ Data Structures & Algo or CS++ AP CSA?

C++ Data Structures & Algo ships an update every 3 months, and CS++ AP CSA every 3 weeks. Most recently, C++ Data Structures & Algo was updated on October 12, 2026 and CS++ AP CSA on October 5, 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.*