ALTIGRAM - AN ACCURATE ALTIMETER APP, FREE, NO ADs
CHECK YOUR ALTITUDE
TAKE A PICTURE
SHARE AND SEND AN ALTIGRAM
CHANGE TOP BANNER WITH YOUR OWN PHOTO
HEIGHT CALIBRATION
Plus also get Current Weather conditions, sunrise and sunset times. An essential app when outdoors.
NOTE for iPod/iPad users: If your device doesnt have a in-build GPS receiver, you would need an external GPS device.
Disclaimer: Continued use of GPS running in the background can dramatically decrease battery life.