KETBILIETAI Testai A B C D is a free app developed by KETBILIETAI that provides over 1800 driving theory test questions. The questions are similar to those in the "Regitra" driving exam and are updated weekly or immediately after changes in KET or other laws. The app's questions are available in Lithuanian, and RU and EN languages are available for browser login.

KETBILIETAI test questions are updated based on the latest KET and "Regitra" questions and are supervised by driving school theory experts from four Lithuanian cities. The app is perfect for those who want to prepare for the driving theory exam quickly and efficiently. The system tracks your learning progress, and if you answer a specific question correctly twice in a row, the question will no longer be presented to you.

The app is highly recommended by driving schools, and many learners who have used the app to prepare for their driving theory exam have passed the exam on their first attempt. The app's features include a dark and light mode and the option to select a test only from "unlearned" questions.