New in version 2.x:
Navigation, dark and light theme, customize sheet.
Customizing a sheet includes different sheet letter/number and individual colours for dark and light handle colours.
New in version 2.1:
Settings and Preferences separated, data entry error handling improved.
2.1.1:
Checking for stones not in the house improved.
2.2.0:
Easy settings for stone radius and laser correction.
2.2.3:
Adjusted requirements to allow installation on some tablets.