Hello. I'm using DropBox API and DropBox .NET SDK to implement an ability to export files from our application to user's DropBox account (using standart OAuth 2.0 authentication). The code is almost ready and everything works fine. I was using free account to test my code. The question is: which account plan should we use in production? The only thing our app depends on is API Calls per month, we don't need a big storage (because users will use their own accounts for export) or some other features. Free account's characteristics were perfect for our case.