I am looking for an app that uses a smartphone to remotely control another smartphone's camera allowing me to see the perspective and zoom. It is technically possible. In fact I have found two apps, auto cam for itune and another camera app for android, to achieve it. The links are as below. Sorry I cannot find information in English. The link is in Chinese.
The problem is that it connects two iphones or two androids, but I need to connect between an iphone and an android. Does anyone know such a app?