
About
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.
What's New in CS++ AP CSP
1.2
August 14, 2026
Fixes and polish: • The "Watch on csplusplus.com" link at the end of each lesson pointed to a page that no longer existed on our site. It now opens the matching lesson page. • Layout fixes so every panel and line of text fits the screen on all iPhone and iPad sizes.
MoreIn-App Purchases
$9.99
Unlock Full AP CSP Course
Unlock: all 11 units, inline MCQs. No subscription.
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FAQ
What is CS++ AP CSP?
CS++ AP CSP is a mobile application that offers the complete AP Computer Science Principles course content. It is designed to be fully offline, providing lessons, practice questions, and exam preparation materials.
How much does CS++ AP CSP cost?
The app offers Unit 1 for free, allowing users to evaluate the lesson format. The full course, encompassing all 11 units, can be unlocked with a one-time purchase of $9.99, with no subscription required.
Does CS++ AP CSP have ads?
No, CS++ AP CSP does not contain advertisements. The app is built to be ad-free, ensuring an uninterrupted learning experience for students.
Can I use CS++ AP CSP offline?
Yes, the app is designed for offline use. All lesson content is included within the app, meaning you can study on a plane, in areas with no signal, or on devices with restricted Wi-Fi.
What is the learning methodology of CS++ AP CSP?
The app uses clear, conversational lesson text written for high school students, avoiding jargon. It includes hundreds of inline 'Check Your Understanding' questions with hints and explanations, along with worked examples and common-error callouts.
How is progress tracked in CS++ AP CSP?
Your progress is saved on-device and is persistent across sessions. This means all your learning data stays within the app storage on your device, with no data sent to any servers.
What devices are supported by CS++ AP CSP?
CS++ AP CSP is available on iPhone, iPad, and iPod. It is built by Yellow Dart Publishing and is aligned with the 2025-26 College Board AP CSP Course and Exam Description (CED).
How often is CS++ AP CSP updated?
The latest version of CS++ AP CSP is 1.0.1, which was last updated on May 25, 2026. The app is built by Kevin P Hare LLC.




