Hi, it does pretty much what the handset does, with the added advantage of keeping the settings (time, location and alignment) even if you loose power to the mount.
Here is a link to the app download, it's free but you still need to buy the wifi adapter. Download the windows version and have look. The phone app is a cut down version and doesn't have all the features of the pc app.
http://skywatcher.com/download/software/synscan-app/
Rick