I use this app for everything from grocery lists to annual task planning. The reminders are great, and I really like how I can enter all pertinent information including phone and e-mail, so no matter where I am I can do what I need to do. The infinite levels of subtasks lets me add as much detail as I like and makes it possible to break a large task into its smaller components with individual due dates to help me keep on track. No more carrying around endless pieces of paper with reminders of what I need to do!