Android

Click the more icon (3 vertical dots on the top right corner) from your google chrome browser after opening the home screen 

iOS devices

Click on the More/Share icon of your safari browser (The Icon with arrow Coming out from inside a box) after opening the homescreen

Add to home screen

From the drop down menu Select ‘Add to Home Screen’ option.  This will be available on both android &iOS 

Done

Click Add & The App Installs with the full name. You can shorten it to Silverscreen if you wish & click add also! 
TA DA! YOU ARE ALL SET WITH SILVERSCREEEN APP