Read this first! Please make sure the lighting on your face is good enough. Please make sure your face is more or less straight, not rotated too much, not tilted too much. Try the debug mode to check whether the face detection works or not. If one of the implementation fails, please report it and try the other one.
Get the latest .apk setup package of Head Tracking 3D 3.1 for free and check out users' reviews on Droid Informer. You will need 15 MB of free disk space to install the app that is built for Android 2.2 and above. The antivirus report shows that this application is completely safe. The tool was originally designed by Yap Wen Jiun and it relates to the Libraries & Demo category.
The developer released a new version of Head Tracking 3D on Feb 3, 2012 and over 10K users downloaded and installed the app. This application has the overall rating 2.2 on Google Play.