Land area calculator: Calculate the area for an arbitrarily shaped (closed polygon) area of land. Choose the points that define the area of land by placing stakes (push pins) in a map. Compass: The most precise compass app that supports magnetic and true north calculated using network location or GPS coordinates. Furthermore this compass displays the location coordinates and the strength of the magnetic field to see if it interferes with the compass sensor. Currencies exchanger: Convert more than 170 global currency exchange rates quickly and easily! You can convert multiple currencies at the same time, remove the base currency amount by pushing it off screen or restore it by dragging it back.