Which app was mentioned as a useful tool for studying and preparing in the past year?

Quizlet is considered a useful tool for studying and preparing because it allows users to create and study from flashcards and various interactive study games, making the learning process more engaging. It offers a vast library of user-generated content, which can be particularly beneficial for students looking to study a wide range of subjects. The ability to customize study materials and track progress enhances the learning experience and facilitates retention of information.

Khan Academy is a strong educational platform focusing on a wide array of subjects, particularly for in-depth understanding and mastery of concepts, but may not have the same interactive, gamified approach that Quizlet offers. Duolingo is primarily focused on language learning, providing great tools for practicing vocabulary and grammar, but it does not encompass the breadth of subjects that Quizlet addresses. Evernote serves as a note-taking and organization tool rather than a dedicated study platform, making it less suitable as a primary studying aid compared to Quizlet.