Think about this before you download and waste your time:
There is nothing pro about Reaver Pro. It is purely for beginners and your best bet for a Pro version would be to use command line reaver or tinker with expert settings wrapped in a GUI called Inflator which you can find here. If you don't have the hardware, buy a compatible ALFA AWUS036H or AWUS036NHA device online and save yourself the money.
If you still want it, you can Download Reaver Pro here, We also offer good technical support if you need it. This is my video review, enjoy: