No, the application is not freeware. It requires a license to be used and luckily you can acquire one from the official website. You can test drive the plug-in for 14 days, but after that, you need to request a quote for the final price. For example, bundle copies are also available and for 2 of them, the price is 14000 $. You can get more info on the website posted below.
Official website: https://www.ocean.slb.com/en/plug-ins/plugindetails?ProductId=ptgf-b1