Can’t change units
Everyone says they have a Barometer app. And they give you your GPS altitude. This one at least appears to use the pressure sensor. However it doesn’t work in US units. And I’m not sitting with a calculator to do the conversions the developer is too lazy to write.
Response from developer
The developer makes every effort to make the application the best it can be and develops it in his free time after work hours. So I apologize to everyone for my laziness and delivering the application that I am able to make. The minimum height that can be read from the barometer is 1 meter. This is determined by the API provided by Apple. So there is no way to convert it to smaller units, e.g. feet.
