This application is an educational project in the Thinknetica online school and is designed to create, manage and execute tests in any subject area. The application is based on the tests with questions and answer options, as well as two groups of users. The first group of users includes users who take tests. The second group of users are administrators, whose responsibilities include creating and managing tests. Due application developing, technologies such as Action Mailer, Asset Pipeline, Rails Internationalization (I18n), User Authentication using Devise gem, Octokit gem and others were used.