Учи.ру: 1-4 класс is an educational platform designed for children in grades 1-4. It is the number one educational platform in Russia and is now available on smartphones. The app aims to make learning fun and engaging for children by using animated characters to explain complex topics. It also features a smart learning system that offers a comfortable learning route for students.

The app provides regular lessons that have been aligned with the school curriculum and state standards, as verified by the Russian Academy of Sciences. By using the app, students' performance can improve by up to 30%. The app also syncs with the UCHi.RU website and marathon events, ensuring that progress made in the app is recognized on other platforms.

Please note that registration on UCHi.RU is required to use the app. The app offers in-app purchases and subscriptions, with payment processed through the user's iTunes account. Subscriptions are auto-renewable, but users can manage their subscriptions and disable auto-renewal in their account settings.

For more information, please refer to the Terms of Use and Privacy Policy provided by the developer.