The Silience app has been developed for IOS so can only be downloaded onto an Apple device. As Silience has not been releaced on the App Store you will need to build the application in xcode.
The GitHub repository is linked below, if you open the README.md file this will give you the instructions to build and dowload the necessary files.
https://github.com/Jordfoz16/Silience
If for some reason the app cannot be loaded a walk through has been supplied.
