There are no tracking cookies on the website and no visitor logs other than Neocities/GitHub defaults
There are no analytics at all in any of the apps installed/side-loaded from this website. The only way I hear about bugs and crashes from side-loaded apps is from direct user feedback.
Apps installed from Google Play might include crash reports only (no tracking and certainly nothing that could be linked to an individual)
3rd party libraries are avoided where possible and vetted before use