Welcome to Appledore

Create, test, and perfect algorithmic problems with powerful tools designed for teachers and problem setters.

Everything you need

Powerful tools to craft perfect algorithmic challenges

Smart Problem Creation

Define variables, constraints, and test cases with an intuitive interface that guides you through the entire process.

Advanced Testing

Generate comprehensive test cases automatically using our expert-crafted test cases or create them manually yourself.

Precise Validation

Ensure your problems are of the highest standard with built-in validation tools and submission testing.

Lightning Fast

Optimized workflows mean you spend more time on creative problem design and less on tedious setup.

Version Control

Track changes, manage revisions, and collaborate with others on complex problem development.

Smart Error Detection

Automatically generate edge cases and tricky test scenarios that expose common student errors and provide detailed insights into solution flaws.

Follow these simple steps to create your first problem

Define the Problem

Start with a clear problem statement, then define variables based on their constraints.

Create Test Cases

Generate test cases automatically or create them manually to thoroughly validate solutions.

Evaluate

Our comprehensive evaluation framework ensures your problem is robust and catches all of the edge cases.