Pie Register is available in two versions; one is the community version which is free. This version has limited features and can be used to create a single registration form. Following are the features in the community version:
The PRO version comes with all the features in the community version, plus these additional features:
If your website needs a basic registration form without the bells and whistles, the community version can do the job for you.
In the case of multiple websites and advance form needs and security, the PRO version is the way to go.