What is the eSchool Gradebook application, how does it work?

According to the introduction of eSchool S.A.L., eSchool Gradebook is a Education app on the Android platform. There is currently a 2.0.0 version released on Nov 18, 2017, you can see the details below.

From this app teachers can do the following feature:

1- Add assessments and set the max and min grades.
2- Add grades for each assessment.
3- Add remarks for specific class/period.
4- Add attendance to the class.

What's new in version 2.0.0 * Add remarks module