After an intensive week of development I'm glad to announce the first release of an stable, documented and free interface for connecting with the closed Tuenti API.
You can download and read more about the project in the dedicated page that I have created for it.
I don't know why Tuenti have never released a open solution for the developers community. For this reason I've developed a full PHP API Interface based on the smartphones apps.
Thanks to the popular hacking technic "man in the middle" between my iPhone and my router and a helpful protocol analyzer tool (Wireshark) I finally discovered the communication protocol (through JSON) between server and app.
I must mention the awesome work of some curious that got the crypt algorithm for the login authentication request.