# APES Prep vs CS++ AP CSP

The clearest difference is in-app purchases: APES Prep at none against CS++ AP CSP's 1. CS++ AP CSP's advantage is update cadence (monthly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CS++ AP CSP sells 1 one-off in-app purchase. APES Prep asks for nothing beyond the download.

APES Prep ships an update every 3 months, CS++ AP CSP monthly. The most recent releases landed on September 20, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | APES Prep | CS++ AP CSP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cs-plus-plus-ap-csp/id6763950898/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 35 MB | 44 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Small Animal Surgeries Inc](https://appshunter.io/developer/1870736337) | [Kevin P Hare LLC](https://appshunter.io/developer/1343264116) |

## What reviewers say

### APES Prep

[App page](https://appshunter.io/ios/app/apes-prep/id6761887254)

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

**In-app purchases:** none


### CS++ AP CSP

[App page](https://appshunter.io/ios/app/cs-plus-plus-ap-csp/id6763950898)

This app provides a comprehensive, offline AP Computer Science Principles course. It features 11 units aligned with the College Board curriculum, interactive quizzes with explanations, and clear, jargon-free lessons. Progress is saved locally, ensuring accessibility anywhere.

**Highlights:** 11 AP CSP course units, Offline access, Hundreds of practice questions, Clear, conversational lessons, On-device progress saving, AP-prep notes and examples

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is APES Prep free?

APES Prep is free to download, with no in-app purchases.

### Is CS++ AP CSP free?

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

### Do APES Prep or CS++ AP CSP have ads?

Neither APES Prep nor CS++ AP CSP shows ads.

### Which is updated more often, APES Prep or CS++ AP CSP?

APES Prep ships an update every 3 months, and CS++ AP CSP monthly. Most recently, APES Prep was updated on September 20, 2026 and CS++ AP CSP on September 16, 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.*