An Ipad Ap that works as an electronic level

[Jch]

I was thinking about how I would align my remote compass with my panel mounted Dynon Flight Dek180 and came upon this useful Ap called imetalbox. I thought others might be interested in this. Because the screen is bright you can't tell what I am measuring, but in the first picture I am holding the Ipad against the instrument panel and in the second, I am holding it against the bracket that the remote compass will be mounted on. I need to shim or adjust the bracket a few degrees to get the pitch parallel to the panel. I am also using the AP to set my landing light angle.