How to get real-time AO for mobile platforms?

Hi, I want to build an interior scene where I'll be placing objects during runtime and I want to get ambient occlusion on those objects which I will be placing during runtime. Previously I used SSAO script for the same, but unfortunately the script doesn't work on any android/ mobile device. So my question is, is it possible to get the same or kind off effect without SSAO so that it will run successfully on mobile platforms without any lacking? Please help.