Land Nav Assistant

Gammon Applications

About this app

Land Nav Assistant accepts MGRS (Military Grid) or Latitude / Longitude coordinates and visually navigates you to each point.


This app was designed with Army, Marine, and other military personnel in mind. Use it to correct your Land Nav technique by analyzing your pace count and tendency to veer left and right.


Available Input: 8 digit MGRS, 10 digit MGRS, Lat/Lon decimal, Lat/Lon dms, and map input.


Angles: degrees or mils

Distance: meters/km or feet/miles

Speed: kph or mph


Use the simple arrow interface or map to direct you to your locations. Your distance, direction, speed, and bearing are shown as you navigate.


Long-tap anywhere on the map to get the coordinate for that location. Easily add locations via the Map interface.


Plan your course by ordering points, or use the course optimization tool which will help you calculate the shortest path possible!


Get distance/direction between two points by tapping the path drawn between them.


Satellite, Terrain, Road, and basic Topographic maps show you, your locations, and lets you enter in new ones.


Overlay a 1000m or 100m MGRS grid anywhere on the map.


Displays distance/direction from your currentl location to all points, or between any two points.


Download your Locations as a spreadsheet to save anywhere, or to share with anyone you choose.


Import a large set of locations via the web import utility, available at: https://www.gammonapplications.com/land-navigation-services/import


This app uses the Military Grid Reference System (MGRS) and Latitude / Longitude.


Choose to display your locations as MGRS 10-digit, MGRS 8-digit, or LatLon Decimal.


D:M:S can be input in the format DD:MM:SS followed by the appropriate direction (NSWE). Default direction is N, W.



DO NOT use this application while learning Land Navigation. Land Navigation is a valuable skill, and should be mastered before using this application. Do not rely solely on this application for navigation, especially when lost. Always be aware of your surroundings.

Ratings and reviews

Bought this app for the little "reconnaissance patrol" my friend and I like to do every 4th of July. It worked great even having no signal out in the Tillamook forest of Oregon. I was able to set a nice route that followed the low ground using the included topographical map feature. My only grip with the app is that you can't select the actual course lines and move them at will to follow terrain features like a winding river. Would recommend overall!

i use this quite a bit for work. For my purposes as a trainer, it's more efficient than burning through AAA batteries on a Fortrex every day and a half, and it's instantly available as soon as I open the app if I forget to fire it up before I need to call of a grid. A Fortrex takes time to boot up, and accquire satellites. I recently got a Samsung smart watch, but I can't move this app over to it. If there was an update that was compatible with smart watches, that would be even better.

This app is great. I use it for work almost every day. I ride an ATV for work and have to navigate trails for military training. The only thing I wish i could do is track my movement on trails and have it save on the map like the MGRS app as some trails are not on the map or show on the map but are actually overgrown and not drivable. If it had this feature i believe this app would be the only app worth using 100%

What's new

Improved app compatibility on older devices