DevPlanner is a hierarchical planning and estimating tool. It helps managing tasks and daily schedules. Shows early and current estimates, as well as actual time spent. It can automatically calculate and order self-imposed deadlines for estimated tasks to evolve time feeling and controlling project milestones. Provides history navigation, customizable printer friendly reports, including project reports and timesheets, powerful search and time tracking, that can reduce effort on common administrative tasks. This tool is convenient for preparing detailed work breakdown and accurate project time estimations. It generates mood map as colors. DevPlanner supports drag-and-drop and can improve planning from the groove to interesting game. Play it daily and never miss an important task or activity.