UI Accelerometer reference

I am new to iPhone development. I want to make a simple iPhone application which computes the distance traveled by the user, how much calories are burnt, where the user located is and in which direction he/she is forwarding to.Can anybody provide me the details or approach to follow to develop this applicatio开发者_运维问答n.

I suggest that you go through the iPhone OS Reference Library. A good sample that relates to accelerometer is AccelerometerGraph.