이투스 수강앱 - Smart Study is a free education and reference app developed by Etoos Education for Android devices. The app offers a new UX/UI design that prioritizes user experience. It also provides a variety of features, including recommended course categories, original content, and personalized course recommendations based on the user's data.

The app offers a broad range of functions, such as quick access to the latest news from Etoos' top-ranked teachers, including events like the 수능/모평 exam. Users can also bookmark and set notifications for their favorite courses, stream them on a dedicated player, and download them for offline use. The app also offers an easy-to-use Q&A platform where users can connect with teachers and get answers to their questions.