Crush Your AP CSP Exam with Spindle

Spindle is the leading platform for AP Computer Science Principles students, teachers, parents, and self-learners. It helps you unlock your potential with real coding, instant feedback, and comprehensive resources like flashcards and games. Unlock your AP CSP potential with Spindle without paywalls or confusion, just results.

hourglass_bottom AP CSP Exam:
May 14, 2026 at 12:00pm
main.spdl 
# Spindle: Where AP CSP code comes alive!
PROCEDURE greet(name) {
    DISPLAY("Hello, " + name + "!")
}
greet("World")

Explore Spindle's Four IDEs

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Text IDE

Write and run code in a traditional text editor, just like the AP CSP exam.

Start with Text IDE
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Block IDE

Drag and drop blocks to build programs visually—perfect for beginners and visual learners.

Explore Block IDE
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Robot IDE

Program a virtual robot to solve challenges and see your code in action.

Try Robot IDE
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Native IDE

Install and run Spindle directly on your computer for the most flexible experience.

Set Up Native IDE

Why Choose Spindle?

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Interactive IDEs

Text, Block, Robot, and DIY IDEs for every learning style—write, run, and debug code just like the AP CSP exam.

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Flashcard Hub

Review, create, and print flashcards to master every AP CSP concept, or use sets made by others.

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MCQ Practice

500+ multiple choice questions with instant feedback and scoring to help you master AP CSP concepts.

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FRQ Practice

Authentic free response drills with real coding, instant feedback, and detailed solutions.

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Create Task Checklist

Step-by-step checklist, pro tips, and progress tracking for the official AP CSP Create Task.

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Exam Format Guide

Demystify the AP CSP exam with a clear breakdown of structure, timing, and scoring.

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Reference Sheet

Practice with the official AP CSP reference sheet—know exactly what you'll see on test day.

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Free & Open Source

Spindle is 100% free and open source—no paywalls, no ads, just learning for everyone.

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General Study Resources

Access a wide range of study materials, including textbooks, tutorials, and additional practice materials.

AP CSP Exam Preparation

Master the AP CSP exam with practice problems, coding exercises, and study resources that match the actual exam format.

Exam Format

Understand the structure and requirements of the AP CSP exam.

Exam Components

  • Multiple Choice Questions (70 questions, 2 hours)
  • Create Performance Task (12 hours, submit program)
  • Reference Sheet Available During Exam

How Spindle Helps You Succeed

Familiar Syntax

Many students struggle on the AP CSP exam because the code looks different from what they learned. Spindle solves this by using the exact same syntax and structure as the AP CSP Reference Sheet.

Comprehensive Resources

Access detailed documentation, practice problems, and exam preparation materials designed to help you understand and master every concept you'll need for the exam.

Open Source & Free

Spindle is completely free and open source, making quality AP CSP preparation accessible to everyone. Contribute to its development or use it freely under our open source license.

Ready to Unlock Your AP CSP Potential?

Join thousands of students, teachers, and self-learners using Spindle to master AP Computer Science Principles—free, open, and built for your success.

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