IOS/Android App Server

Hi All,

I was wondering if anyone with experience developing mobile applications could weigh in on this. I am currently developing an application that uses a log in system. The current back end that I use is an open source platform call baasbox, I chose this at the time since it was easy to use( and free :) ). Unfortunately I am getting to the limits of the platform and for this app to grow I need something that I can build apon myself.

So my question is what platforms do other people use, or if you build it yourself what languages/apis did you use? I want to be able to send data back and have it analyzed with a response to the application.

Can always roll your own json API. Personally I do that with node js and have fun with that. But that's just me. Lot of nitty gritty doing it yourself