Apps for a better SharePoint
Rich Forms is provided as a free app and a Pro app. The Pro app contains all the features of the free app and much, much more.
So in fact there is not much advantages in downloading the free app. We suggest you use the Pro app and when your trial license expires you will still have the features of the free app available to you. Anytime you purchase a valid license all Pro features will be at your disposal.
The easiest way to purchase a license for the app is by going to the Microsoft Office Store.
If you have any special requirements or further questions please don't hesitate to contact us.