Quickly and easily determine a remote GPS location from two, or more, geolocated points with compass bearings to that location.

Specifically designed for use in the field, Field Triangulate supports:

- Fully automated use of iOS device location. Compass bearings are best manually entered.
- Manual entry/edit of any/all readings.
- On map display in various display modes.
- Manually update device bearings (e.g. for use with a compass.)
- Share the triangulation to others.
- Multiple latitude/longitude formats:
-- Decimal degrees
-- Degrees and decimal minutes
-- Degrees, minutes and seconds.
-- (Display for UTM.)

Basic usage:

Use your iOS device & compass to take bearing on a remote location from two locations and Field Triangulate will calculate and display the GPS coordinate for the remote location.

Advanced usage:

Enter readings provided from a remote person (perhaps by iPhone or radio) and add your own readings manually in order to calculate a remote location.

What’s New

Version 3.1.1

Fixes and improvements. Updated to latest platform. Share/Import readings.

Ratings and Reviews

3.6 out of 5
7 Ratings

7 Ratings

Nick Kafir ,

Useful but problematic

I’ve been seeing a consistent problem where projection lines disappear at carrying zoom levels, most often when close up.

Another issue is when holding the phone sideways to sight down the edge of the phone the keyboard blocks the save button on screen. Additionally, being able to use the volume buttons would work well for locking the direction in.

After setting a projection line the map at times will zoom out to a world view requiring panning and resetting the zoom level.

Finally I’d like to be able to exit from creating a projection like without creating the line on the map. As it is now, tapping off to the side will return to the map but will still set a projection line at 0 degrees. One must then go to the listing of readings and delete it from there.

LaxMedia ,

Good for radio fox hunting

Attaching iPhone to rotating radio signal locator, this app helps to quickly triangulate on map where the “fox” is hidden. Note to developer the compass hdg should be more visible when setting up the fix. Maybe even using the camera as a target sight.

ckperk24 ,

Very limited usefulness

I thought I'd found an App that could be used in the field to spot-in multiple locations with heading to a feature to triangulate it's location....this is NOT it. Manual entry of coordinates. No map function.

Developer Response ,

I initially created this as a fully automated map based application, but soon found that one needed a manual compass to get sufficiently accurate readings, so hid certain aspects behind a settings screen. Please check out the new version, since this is a complete rewrite (given what I know today) with options (in settings) for you to enable the things you were missing.


Neukadye, LLC.
45.4 MB

Requires iOS 10.2 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© Neukadye, LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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