Tool for visualizing coverage/"deviance" of recorded tracks?


When I go out walking in the forest, I let a GPS tracker run on my phone. So at the end of the day I have one big GPX file of the whole track.

Here’s what I would like to do:

(1) Coverage: Visualize which paths/streets/etc in my local forests that are already mapped in OSM I have not yet walked along.

(2) “Deviance”: Visualize which parts of the recorded track are not on any already mapped path/etc. With the goal being that I can see at a glance where I might be able to add new paths to OSM.

Does anyone know a tool (software/website) that does one or both of these things? Or alternatively, does anyone have a suggestion for other ways to achieve these goals?

Kind Regards,