KET Testai, developed by Black Brackets for Android, is a free app that aims to help you prepare for the Kelių Eismo Taisykių (KET) theory exam. The app contains over 1000 questions that are specifically designed to help you learn and practice the B category test.

The app offers a Practice Mode, which is designed for quick learning. This mode allows you to practice answering questions without any time limit. The app also provides detailed explanations for each question, which helps you understand the concepts better. With KET Testai, you can test your knowledge and prepare yourself for the KET theory exam with confidence.