MyHomework - myHomework is an app where students can manage their school life.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
iStudiez - iStudiez combines tracking schedule, homework and grades with a delightful user experience.
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
Power Planner - Record homework and class schedule.
Pomodone - Pomodone is the easiest way to track your workflow using Pomodoro technique, on top of your current task management service.