Study with topic-based notes, structured lessons, and multiple-choice questions. Test understanding with quizzes and review key concepts for AP exams. Track progress and access explanations for incorrect answers.
Create with questions and answers. Review cards based on the SM2 algorithm to reinforce memory. Automatically back up data to iCloud. Track progress over time. Adjust review intervals based on recall performance.
Measure eye alignment with automatic detection of monocular PD, fitting heights, boxing, and lens distances. Capture images with the portable device, save results, and access additional equipment information for ordering.