Recently, there was a widely publicised successful hacking to accounts on two well known networking and messenger software apps using known weaknesses and vulnerabilities of little known international network called SS7. The technique is very simple and very known to spies and hackers.
It's secure to download UltraViberM. King Tut is the official developer of this application that can be found in the Communication category. The developer rolled out a new version of UltraViberM on Jul 15, 2018 and over 100 users downloaded and installed the app.
The average score for this application is 3.9 on Google Play. It's free of charge to get the installation package of UltraViberM, also, you can read users' reviews on Droid Informer. The app runs on Android 3.0 and higher.