Marvin - Behavioral psychology-based productivity & to-do app

Marvin is a unique and customizable productivity tool that aims to help you beat procrastination, feel in control of your life and be more productive. Marvin incorporates principles from behavioral psychology. Marvin is specifically designed to help you get your tasks done and not just store them. It is a popular app in the Office & Productivity category.

https://www.amazingmarvin.com