Just discovered this evening, works extremely well over Wi-Fi! Creator of the app was an avid flight simmer and tested in SC as well. I was very impressed.
Download the app, simply called “Head Tracker” by John Yu.
Download Open Track on your PC.
Simple setup from there, enter PC IP, and simply click “Start” on open track!
Enormous amount of customization in Open Track in terms of sensitivity curves. It was extremely satisfying and worth $1.99 for those who want a cheap alternative.
Also, FREE to try, unlimited 10 minute free sessions to see if you like it!