comments on nav screen layout
I like the white on black color scheme, easy to read,
Consider droping the minus sign on the Longitude. It is implied when refering to the W(est) direction.
Accuracy - assume this is associated with the Lat/Long positon as opposed to the elevation?
Satellites - Interesting but not very useful unless one knows the relationship between accuracy and number of satellites used in the position calculation. Consider leaving it out.
Looks good and I have used it a couple of times to check/confirm location on a paper map. Have the app on the tablet I use for digital navigation. Easy to check position as opposed to finding mobile phone, turning it on, and going from there.
Keep up the good work.
Jim H