DFR Editions

This app replaces a USB GPS receiver ! You will save you the 50 bucks !NMEALink reads GPS and accelerometer from your iPhone/iPad, and forwards NMEA f …

Accordingly with your position and time, the sun and moon positions are refreshed in real time into the compass rose. You should rotate the wind rose …

Use your iPhone/iPod/iPad on its edge, as a Hand Bearing Compass.Press the screen to take a sight.After 3 sights, go to the chart table !The Magnetic …