

Yes, that exists now using BOINC.
We used to install and connect to a university hosted lab program (protein folding, Extraterrestrial data, etc) it would download packages of data to compute and auto upload when finished. You could see in the project how many users were logged in and crunching.
It seemed to drop off with Ai and centralized servers in recent years where no projects were available to assist with. :(





OsmAnd+ is decent navigation app on mobile