Bring in your own charts and maps
If you have a map nobody else ships, NavGPS will carry it. Import it once and it sits in the layers list beside topo and satellite. The file type is .mbtiles, which is what most downloadable map files come as.
Steps
-
Get the file onto the phone
Save it to Files, or AirDrop it from a computer. -
Import it
Map tab → layers → import, and pick the file. NavGPS checks it is a real map before accepting it. -
Switch to it
It appears in the layers list beside topo and satellite. -
Remove it later
The same sheet deletes it and reclaims the space.
Worth knowing
- An imported map lives on the phone, so it works offline from the moment it lands.