Please make an Altimeter that can do these things: Player's current position can be set to 0 m/ft elevation when this app is on, then it will show the player's elevation relative to that 0 until the altimeter is reset again Ability to set custom elevation at the player's location, then the altimeter will continue to show the player's elevation relative to that until the altimeter is reset again. Thank you for reading this, it would be an awesome feature to have! Even better if it can output an elevation vs distance graph.