Билеты на трактор (кат. C)DEMO is a free demo version of the exam preparation app developed by MobEdev for individuals who want to obtain the rights of drivers of special equipment under category C. The app is designed to help users prepare for the theoretical exam by providing them with the official exam papers approved by Gostekhnadzor inThe demo version includes 20 out of 45 exam papers, each containing 8 questions, and the answers to them.

The app features two modes of operation: the test mode, which simulates the actual electronic exam by Gostekhnadzor on the theory, and the training mode, which allows users to solve the papers in any order and keep a history of their results. The history of solutions can be cleared, and users can start their training again. The app also includes four modes of operation: the test mode, the training mode, the marathon mode, and the error correction mode. The app is an excellent solution for mobile learning, as all category C papers are always at users' fingertips.