Amazing Marvin is a web and desktop app that aids in task management and overcoming procrastination. The app offers customization, workflow templates, and import features, and employs principles of behavioral psychology to enhance productivity. Key features include task organization, daily planning, calendar syncing, task dating, recurring tasks, timers, goal and habit tracking, time tracking, and a visual timeline. Users can plan their week, estimate task durations, and allocate time for activities. The app also provides a custom sidebar, focus mode, procrastination wizard, long-term planning tools, project settings, a backburner area, gamification, review dates, custom labels, productivity stats, and keyboard shortcuts. Additional features include task notes, a task matrix setup, task search, email-to-task creation, smart lists, performance targets, completed task search, task and project saving, a dashboard of upcoming items, a weekly review checklist, sorting options, a daily note area, scheduled rewards, subtasks, reminders, cloud syncing, filters, random task selection, next steps alerts, snooze function, API, themes, print option, and mobile and desktop apps.