There are so many apps and services out there like Tango and many of them do offer links to buddies of other networks like Skype and other IM apps, at least to Facebook. The voice quality, however, suffers some lag, especially with people having less than lower bandwidth. Maybe Tango should think about reviewing the codec they use for voice and video. You can text messages, make and receive voice and video calls, record and send a video message to people who are not using Tango, and some other simple stuff.
But you cannot have a chat conversation like in Whatsapp, Viber, and Kakao Talk.
More Details Our Maximum On™ technology ensures 100% uptime Service Level Agreement (SLA) so that your website is always available when your visitors are online.Tango works on Windows PC and on the i Phone, i Pad, Android devices and Windows Phone.It has a simple interface, but the call and video quality have yet to be improved.You also cannot have one other person in your video call. Tango does something singular, which is trivial but that I found interesting.During a voice call, you can create certain animations that express many things.