Compass and Accelerometer precision

Question

i made my own application in Android that use compass and accelerometer sensors to display the degrees of rotation and inclination of my device. I initialized all the listener a

Answer 1

I did this using a Kalman filter from here: Greg Czerniak's Website

I'm sending data to a udp port and smoothing it on the PC using python. But I guess you can find a Kalman filter implementation for java/android out there.