Video Call Cross platform, Android - iPhone

If the iPhone and iPad have Facetime, then Android users do not need to grieve. In addition there are video calls via 3G services, they could use advice-style video call Facetime with an application named Tango.
This application was developed by the Tango developers, and you can get one free! more tempting, you can connect between Android phone, and can do so by phone IOS platform, such as the