Amazing Marvin

Amazing Marvin is a task and productivity management tool that helps to beat procrastination. It includes a day planner, a calendar, nested categories, due dates and "do dates" (scheduling of tasks to take place at a future time), start and deferral dates, recurring tasks, timers and counters (as well as time tracking capabilities), agendas, and procrastination management features (e.g. task gamification, a procrastination wizard that provides guided help, etc.)

Amazing Marvin starts at $12.