Why you may need yet another task manager app in 2016? There are thousands of apps and sites nowadays that allow to create tons of checklist, or stacks of cards, or something like that... But there are two serious problems with checklists and cards. First, it's usually hard to manage task/goals of differrent sizes. It's usually impossible to solve one big goal completely at once. So, it's natural to split it into several smaller subgoals. But what if some of subgoals are still too big? You have to split them again. But! Most of task/goal managers (at least ones seen by this project's author) do not allow you to easily create more than 1 layer of subtasks/subgoals.