Turn your phone into a real working aircraft altimeter. Features: * Touch and drag to set reference pressure. * Altitude in metres or feet. * Pressure in hPa, mbar, or inHg. * Easy to use. * No ads. This app is only available for devices with a built-in barometric sensor. DISCLAIMER: This is not an approved aircraft instrument. This software program can not take the place of an approved and properly calibrated aircraft altimeter. For education purposes only. IMPORTANT NOTE: This altimeter