Checklist for individual coin collections

[NinaWie]

It would be nice to have the option to track which coins were already collected at one machines. Could simply be four blank lines where the user can give each coin a name and mark if it was collected.

User comment:
I love this app and that I can mark if I already visited one. The only thing that could make it better is when I click a machine there would be a checklist of all pennies at that location. This was if I only get some of the pennies I know which ones I still need when I go back.