A little gem of an App. It is simple to use yet offers plenty of options for getting yourself organised and for list management. I find the 4 level hierarchy so useful. The hierarchies are Groups > Lists > Tasks > Steps but you can leave out level 1 if a particular list is not part of a group. I also like the fact that "My Day" is managed manually as this ensures that I actually bother to review it. Integration with Office 365 makes your plan available on all your devices and gives you a backup.