My screen cracked down the middle 6 weeks after I applied the SHIELDZONE product. I'm not sure if it was related. But, there was a lot of temperature variation the week it cracked.
Since it didn't crack right away, I don't think it was the sqeegie thingie. Possibly, due to a defective screen??? I've been without for weeks getting it fixed. I don't think I'kk order another. I did call their customer service, but I did NOT get a return phone call!!!