Compass vs MagVar

With “Compass Pro” you can orientate yourself optimally at your location. You can see the direction of the compass and match it with the satellite image or the map on the compass. That you know exactly where you are you get the street address, the exact GPS coordinates and the current height above sea level displayed. In addition, the position is displayed in What3Words (w3w) coordinates. To switch between satellite image and map view just tap the compass. You can zoom with the pinch-/spread Gesture or with the slider beneath the Address so that you can orient yourself at certain prominent points. The blue highlighted area indicates the current accuracy. Terms of Use : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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.