The RWGPS (ride with GPS) app has an OSM overlay (if you choose it), and has a "show my location" option for when you're out in the wild. I think you can use it to navigate but I've only ever used it to sense check when my Garmin proves unhelpful. It works pretty well, should be fine for NCN route finding.
The RWGPS (ride with GPS) app has an OSM overlay (if you choose it), and has a "show my location" option for when you're out in the wild. I think you can use it to navigate but I've only ever used it to sense check when my Garmin proves unhelpful. It works pretty well, should be fine for NCN route finding.