App Ville is a centralized place to find productive apps for Payplans. Here you will get apps developed from all over the World !!!
This app is freely downloadable from the app-manager at your site's back-end
User-detail app is used to show additional details of the user. Using this app administrator can ask additional details from user.
To apply validations and classes on the parameters which you include by using this app, you can refer this document.