In your opinion, what is the most valuable application that you use day to day in your phone? For me, it's a very simple application called Minimalist. I like to write everything down because I'm a planner, one. And two, I like to see my ideas on paper. That way I can kind of open my brain to think about other things in life and I don't forget things, especially when they're great ideas. So what's that one app for you?