Droppy Premium Subscription will allow your Droppy users to get more out of your service. They will be able to subscribe to a premium plan, this will give them some more features like larger file uploads, longer file storage, no advertisements and the password function. The plugin will charge the user every billing cycle (You can set your own price, billing cycle etc.), and checks if the payments are successfully made. Users can easily cancel/re-subscribe using their own control panel.