You are able to download the setup package of Hello for free and check out users' reviews on Droid Informer. The download of the app doesn't contain viruses or any kind of malware. Facebook is the creator of this application which can be found in the Communication category.
Hello has been downloaded and installed by over 0,5M users and its most recent update was released on August 4, 2015. The average user rating of the app is 4.2. Samsung and Sony users recommend this application.