Not as easy to apply, steinheil goes on dry. People can see I have a screen protector on when I used zagg. With steinheil, the untrained eye can't even see its there. I can apply a steinheil in 10 seconds without one bubble. I can't do that with zagg.
Because it's a "wet" application...it leaves to many issues for water damage (for those who really don't know what they are doing) and with air bubbles and stretching.
Steinheil takes much less effort and time to apply.
But that's my opinion...
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