Private Text and Voice Calls Messenger
TIS Messenger is a freeware and cross-platform messaging and Voice over IP (VoIP) service. The application allows the sending of text messages and voice calls, images and other media, documents including user location. The application runs from a mobile device though it is also accessible from desktop computers; the service requires consumer users to provide a standard cellular mobile number. Originally users could only communicate with other users individually or in groups of individual users.