Fsecure on open Wifi... questions.

I have a question about using fsecure on open WiFi.  Let's say I have preinstalled the app on my home WiFi or cell network.  Does the app then secure all transmissions when I connect to open Wifi.   Many apps phone home when you connect (including Google).  Would everything be sent across the VPN, or might some of it go insecure before the fsecure VPN connection is made?   

 

One other question....  any options with Fsecure on my Chromebook? 

dpxtc
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