DOF for iOS using image effect?

I try to use DOF for iOS but apps cannot run
I found this one http://forum.unity3d.com/threads/143887-DOF-on-IOS-How-we-did-it-(mini-post-mortem)
but it use shader effect, have to apply same shader for every object → it’s impossible for my project
Does anyone know any script DOF for iOS using image effect like built-in function in Unity3d?

I don’t think one exists now. The reason the other one works well is that it skips an extra render pass by encoding depth data into the alpha channel.

You would have to write a shader that samples or renders a depth buffer but that is basically what the built in image effect does. Maybe you can simulate an effect using a glow shader.