UTM Grid Ref Compass vs MagVar

Find out your current location on the Universal Transverse Mercator (UTM) geographic coordinate system. This app will provide you with your current UTM Grid Ref, along with a Compass Bearing, WGS84 Latitude and Longitude values, and an indication of the current Hemisphere. An indication of the Device GPS readings will also be shown. Includes a handy graphical guide to the United States UTM Zones. This app will work worldwide, whereve UTM Data is required. Ideal for outdoor activities, walking, climbing etc. Remember to always carry a map and physical compass in addition to your iPhone. For the best accuracy, use in an open space, away from trees or hill edges. Like a traditional compass, use with the phone in a flat position, not upright. When continued usage is required, you can set the iPhone Screen to stay on indefinitely, from the Settings tab. Send or Share your location information in a Text Message (or iMessage), Email or Tweet* This app requires Location Services to be enabled in your iPhone, and you must grant permission to the app to use these. Compatible with iPhone. Not compatible with iPod Touch, or (non-cellular) iPads, due to the lack of GPS and Compass hardware. * - Internet Connection, and correctly configured Text Message (or iMessage), Email and / or Twitter settings, required to fulfil.

MagVar is targeted towards anyone interested in navigation. This includes, pilots of aircraft, captains of sea going vessels, cartographers, engineers and surveyors. Anyone who uses maps and a compass will find the declination calculation (also referred to magnetic variation) very useful. (Declination is the difference between true and magnetic north and used when plotting a course on a map.) MagVar calculates the magnetic flux density for any location on the Earth and then uses this data to calculate magnetic variation. The model is accurate for dates ranging from January 1, 2025 up through December 31, 2029. Using the model, the app calculates declination and inclination. As the user pans the map, the magnetic variation is calculated and graphically shown as a map overlay.