Earlier quoted context omitted.
Nice list! There are at least four Android GPS trackers in F-Droid: OpenTracks, RunnerUp, OSMTracker and TinyTravelTracker, maybe there's one less app you need to build! https://github.com/OpenTracksApp/OpenTracks https://github.com/jonasoreland/runnerup https://github.com/labexp/osmtracker-android/wiki https://github.com/redfish64/TinyTravelTracker
Thanks for the links! Some of these I'd seen before and I actually used OSMTracker to generate GPS traces of my walks for a while. OpenTracks looks like it might be closest to what I'd like. What I really want, though, is something that aggregates the data from a collection of GPS tracks to give me the big picture - basically a static site generator that takes a directory of GPS tracks as input. I've got a few tiny s…
https://f-droid.org/es/packages/org.mcxa.zephyrlogger/
Good luck!