Wonderful app and great customer service. This app has replaced 2 or 3 of my old apps. This is the most customizable list app I have found. Colors can change, tasks can be rearranged within a list, lists can be rearranged. Tasks don't need a due date or time, but can be assigned either, along with notifications or alarms if desired. I had a small issue with sound, emailed support, problem solved in just a few days. Excellent!