Learn vocabulary with AI-powered tools that correct word and example sentences, create personalized wordbooks, and generate original examples. Use spaced repetition system for automatic review based on forgetting curve.
Play piano using a grid-based key layout. Select MIDI voices and adjust scales. Enable sticky keys for practice. Adjust note duration and velocity. Save and load custom configurations.
Study for the second-class electrician license with 474 practice questions organized by subject and in exam format. Review selected questions for later study. Access detailed explanations for all problems. View progress and manage study sessions.
