Thea

What it does

Thea is a study tool that creates practice questions and other study tools from your own course materials. You can upload lecture slides, YouTube links, images and more, then study with questions that make you think instead of giving you the answer. It is free for students, and most learners never pay.

Thea is a study tool that turns your own course materials into practice questions and other study tools. The site says you can upload over 90 file types, including lecture slides, YouTube links and images, and get study tools instantly. Its Smart Study feature asks you questions based on your material instead of handing you the answer, so you do the thinking yourself. Thea says it is built on active recall, spaced repetition and retrieval practice, and that it adapts to what you know and what you do not. The site states that Thea is free for students, that 90% or more of learners never pay, and that premium features exist for those who want more. It also says no credit card is required and that you can try it now with no account needed. The site reports an app rating of 4.9 stars, support for 80 or more languages, and users in 200 or more countries and territories. It lists several awards, including Best Online Study Tool 2026 from the EdTech Breakthrough Awards. Thea is aimed at students, educators and institutions. A careful reader should note that the site does not list exact premium prices, and that the quality of the study tools depends on the material you upload.