А4 Тесты is a free Android lifestyle application developed by vasky that tests your knowledge about the popular blogger Vlad A4. The app features over 20 different tests with questions about Vlad A4's personal life and YouTube career, including questions about his team members Glent, Kobyakov, and Serega. The app has a unique game mechanic where you have to put words in the correct order, and some levels are time-restricted, making it challenging for casual players.

The app has a beautiful design with a rating system that allows you to compete with other players and add your name to the leaderboard. Throughout the game, you will receive likes or red crosses for each correct or incorrect answer, respectively. The app also comes with an interesting rating system where you can earn points for completing tests and watch the leaderboard. However, the app is not officially affiliated with Vlad A4 or his company, and the developers are not responsible for the app's content.

Overall, А4 Тесты is an engaging and entertaining app for fans of Vlad A4, and it's a great way to test your knowledge about the popular blogger and his team.