The concept of the app logo is a physical worry stone that the user can interact with, the information is then logged into the app to help monitor and give advice for when the user may be feeling anxious. Above I have created a test logo, with many different colour variants. The background colour is what I will be mainly using inside the actual app, so to put it against the logo will help in deciding which colours fit best. I have tried to go for the pastel colours to help in reinforcing that the symbol resembles a worry stone.
If I was able to receive some feedback on whether this logo resembles the product, it would be greatly appreciated.