I'm glad you're posting this. I've been using Medito for about three years now. In our world of everything costing something, Medito always surprises me with how much content it has and its amazing quality without asking you for anything.
Also, I've downloaded the nature sounds in-app and use them when I'm doing something I need to focus on. Nothing like reading a book with calming rain as white noise.
Gold is used in a lot of other things than money and jewelry. For example, a sizable portion of the world's supply is used in electronics like cellphones and computers.