Features:

* No ads.
* Works without internet connection.
* Beautiful black and white interface.
* Gives altitude height in meters and feet.
* Gives level of altitude.
* Gives sunrise and sunset time.
* Gives current location address if device is connected to internet.
* Gives approximate percentage of oxygen based on Altitude Chart - http://www.higherpeak.com/altitudechart.html
* Share option.
* Open location in Google Map or Apple Map when tap on location's coordinates.
* SHAKE device or PULL screen down to receive updated location from GPS. App does not listen to location change. Refresh to receive updated location.

Source Code: https://github.com/abhaydgarg/Altimeter