Audacity is a to-do list app; simple, effective and very smart.
Audacity - Details & Top Features
Audacity is a personal to-do list app which is also ideal for couples, clubs, teams and small businesses/NGOs. It does the simple stuff like reminding you about appointments, or the need to make them; allows you to share your tasks with the teams you create and ensures you never again forget a deadline. (We can't promise you'll meet every deadline, just that you won't be surprised by them!).