It's free to get the installer of Indonesia Virtual Walkie Talkie, also, you can have a look at users' reviews on Droid Informer. The app runs on Android 4.0.3 and above. This application is completely secure for downloading. IndoVWT is the developer of Indonesia Virtual Walkie Talkie that can be found in the Communication category.
The latest update was on Jun 26, 2018 and the app was downloaded and set up by over 0,5M users. This application has the overall rating 4.7 on Google Play.
As users mention, the strong side of Indonesia Virtual Walkie Talkie is a good user interface.