MobiJennik for the principal, teacher, parent and student The application cooperates with the electronic journal www.mobiDziennik.pl. Allows all users to authorize new devices (two-factor authentication). The teacher can conduct lessons with the topics, attendance, grades and student comments. Among the options for parent and student is a review of the timetable, attendance and grades. For the application to work, you need an account in the www.mobidziennik.pl system.