Apps like Polaris GPS Hike, Bike, Marine

Here are some great alternatives to Polaris GPS Hike, Bike, Marine by Disciple Skies Software :
i-Boating:Marine Navigation
i-Boating:Marine Navigation
★4.2
Marine Ways - Nautical Charts
Marine Ways - Nautical Charts
★4.5
Wavve Boating: Marine Boat GPS
Wavve Boating: Marine Boat GPS
★4.5
New Zealand Topo Maps
New Zealand Topo Maps
★4.7
mKart Marine Navigation
mKart Marine Navigation
★3.4
Avenza Maps: Offline Mapping
Avenza Maps: Offline Mapping
★4.7
Marine Navigation Lite
Marine Navigation Lite
★3.3
Aqua Map Boating
Aqua Map Boating
★3.4
C-MAP Boating
C-MAP Boating
★3.9
WinGPS™ Marine
WinGPS™ Marine
★3.3
Gaia GPS: Offroad Hiking Maps
Gaia GPS: Offroad Hiking Maps
★3.4
Route Scout - GPS Topo Mapper
Route Scout - GPS Topo Mapper
★4.7
Marine Navigation
Marine Navigation
★3.6
Guru Maps — GPS Route Planner
Guru Maps — GPS Route Planner
★4.4
AIS Flytomap GPS Chart Plotter
AIS Flytomap GPS Chart Plotter
★4.4
Mariner Sailing GPS & Logbook
Mariner Sailing GPS & Logbook
★3.8