Toepie is an app that runs completely locally. The app does not store your data outside of your own device.
This app has been created using Android Studios, I am not tech-savy enough to know what Android Studios can or cannot store.
I can assure that the only things Toepie stores, are the scores the app has been designed for, this does not leave the device.
Toepie has no server containing or relating any user data.