Android: An Eisenhower matrix is an effective way to prioritise your tasks by sorting them into one of four categories based on how urgent and important they are. MyEffectivenessHabits allows you to use this tool on your Android phone.
The Eisenhower matrix (credited to the President of the same name) allows you to sort your to-dos by what needs to be done right now, what can be done later but not forgotten, and everything in between. The app allows you to pick a quadrant and place your tasks in one of four quadrants, as well as set up broad goals and establish weekly plans for getting things done.
MyEffectivenessHabits [Google Play Store]