Quizlet

Quizlet is a popular study app and website that lets students create digital flashcards, practice with matching games, and test themselves using adaptive quizzes. Originally built by a high school student studying for his own exam, it’s now used worldwide to review vocabulary, dates, formulas, and more across every subject. Parents and teachers like that learners can build their own sets or draw on millions of public ones, making studying more interactive and efficient than paper cards alone. With a robust free tier and optional paid features, Quizlet offers strong value as a flexible memorization and review tool from late elementary through college.