Школьный дневник, or "School Diary," is an Android application developed by LLC Nintegra. The app is designed to provide parents and students with information about academic performance and attendance. In addition to this, it also provides access to additional information about the educational process.

The application is integrated with the comprehensive learning management system LMS "School," which allows for interaction between teachers, school administrators, students, and parents. Parents are given a unique login and password to access the electronic diary. If parents have multiple children attending the same educational institution, they are issued different logins and passwords to access the diary of each child.

Overall, Школьный дневник is a useful tool for parents and students to stay informed about academic progress and attendance. It is free to use and can be downloaded on Android devices.