myHomework Student Planner
7.4#9 in study planner appsFrom $4.99 a yearFree planAndroidiOSWebExtension
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It suits students who want to organize classes and deadlines across devices, including when offline. Premium sharing and import tools may help students coordinating homework or bringing assignments in from school systems.
Power Planner suits students who want to keep assignments, class schedules, grades, and GPA together. It may also fit students who use Google Calendar and standard or A/B week schedules.