I am asking because I keep thinking that maybe if I'll click on another button - something will change in my app.
Issue is: I am making changes in the HTML files but the app doesn't change
So I'm clicking "sync to latest" then "clear app data"
But since I"m always doing so - I was wondering why it's not the same button then ? 
Clearly there's a difference ... so my que is - what it is ?
What is happening in the backend when I click "sync to latest" vs "clear app data" ?