You are able to get the setup package of Kitab Ushul Sunnah 1.1 free of charge and check out users' reviews on Droid Informer. The app runs on Android 4.0 and higher. The download of this application doesn't contain viruses or any kind of malware. Tkj_Studio created the tool that falls into the Books & Reference category.
The most recent release was on Oct 4, 2018 and Kitab Ushul Sunnah was downloaded and set up by over 1K users. People rated the app 4.8 on Google Play. Adverts are a part of this application.