The download of the app doesn't contain viruses or any kind of malware. Koss is created by AppsVision and its category is Business. The tool has been downloaded and set up by over 100 users and its latest release is dated Nov 26, 2015.
This application has the average rating 3.5 on Google Play. You are able to download the installation package of Koss 1.4 for free and take a look at users' reviews on Droid Informer. The app works fine on Android 2.3 and above.