No, though I would very much like to. Fairly often I drive in areas where good cellular coverage and good map coverage are spotty or even completely absent. I would love an easy to use app that I could run that would allow me to upload data. I also like OSM for the freely-downloadable-ness. Driving in dark (no data) areas I want to download in advance whatever map data is available; and Google makes that much more painful than it need be.