Okuduğunu Anlama Testleri is a free Android app created by Orhan Demirdağ. It is an educational app that aims to improve the reading comprehension skills of elementary school students. The app consists of three levels: beginner, intermediate, and advanced. Each level has 30 parts, making a total of 90 parts with 5 questions each, totaling 450 questions.

The app is designed to help students understand what they read by answering questions related to the text. Once a student answers all the questions in a part correctly, the test button for that part turns green, indicating that the student has successfully completed the test. This feature allows parents to track their child's progress and see which parts they have completed.