Question: I need a study aid that can generate multiple-choice questions and provide personalized feedback on my answers.

For a broader study guide, Wisdolia is a good option. This AI-based tool creates multiple-choice questions and provides personalized feedback based on a range of sources like lecture slides, YouTube videos and PDFs. It has a range of pricing options, including a free tier, so it should be useful for students with different needs. Wisdolia is designed to help students learn faster and more effectively by automating the creation of study materials and offering more detailed feedback.

Another powerful option is Quizgecko, which converts text files like PDFs and DOCs into quizzes you can share. It can handle multiple question types and offers personalized learning with customizable flashcards and spaced repetition. Quizgecko also offers intelligent grading and detailed analytics so you can track your progress, making it a good tool for getting the most out of your studying.

StudyFetch is another interesting service that converts educational materials like PowerPoint and notes into interactive study aids. It also comes with an AI tutor, Spark.e, that offers personalized feedback and guidance. StudyFetch can handle a range of file formats and offers features like AI-generated lecture summarization and essay grading, so it can be a good option for students who want to spend less time studying.

Finally, Quizbot makes it easy to create tests and quizzes by generating questions from a variety of sources like PDFs, videos and web links. It can handle multiple question types and multiple languages, so it's good for practicing standardized tests. Quizbot also offers a range of other features, like a plagiarism checker and AI content detector, that can make educational assessments more useful.