Membership System For Website and IOS application

I am currently making an app and website. Is there a system around that will integ开发者_开发知识库rate with Joomla website AND an ios application (android would be a plus!). This system would need to have the ability for different premium plans.

Thanks

What you are doing sounds unique so I doubt there is a system out there to fit your needs. What you can do is write your own component for Joomla such that you make an API with a number of different methods that when queried returns a JSON response. Have a look at my answer to this question (Joomla Login Authentication from external app) in order to get a sense of how to do this.