If your New Years resolution is to get better grades this semester, or you’re just looking for a way to stay organized in school Power Planner is for you. This app can help you stay on top of assignments and due dates with ease. With Power Planner you can add class schedules, add homework assignments, add exams, see overdue items on the live tile, add notes, and calculate your GPA. The new calculating GPA feature supports custom grade scales, so it should work for your school. Power Planner is an essential app for students everywhere. It’s free and $1.99 in the Marketplace.