Çözüm Online is an Android app designed for students preparing for YKS, TYT, AYT, ALES, LGS, KPSS, and YDS exams. The app provides an online platform for students to solve questions and get solutions from expert trainers. The trainers solve the questions within 15 minutes and provide detailed explanations. Students can ask for further clarification or provide feedback to the trainers.

The app offers a credit-based system, where each question costs one credit. New users get three free credits upon registration, and they can earn more by referring friends to the app. If a question is not solved correctly or within the given time, the credit is refunded.

The app covers a wide range of subjects, including Mathematics, Geometry, Physics, Chemistry, Biology, Turkish Language and Literature, History, Geography, and Philosophy. Trainers can solve questions from different grade levels, ranging from 5th grade to high school graduates.

Overall, Çözüm Online is an excellent platform for students who want to practice solving questions and get expert guidance. The app is free to use, and the credit-based system makes it affordable for everyone.