What's the difference between IonGlass, AirFoil and iVisor AG?

IonGlass and AirFoil Glass are constructed using the same atomically-strengthened glass. IonGlass provides edge-to-edge coverage, while AirFoil adhesive layer helps with the rapid dissipation of air bubbles to simplify the installation process. 

iVisor AG features an anti-glare (or matte) finish that is intended to reduce glare from indoor lighting sources that commonly interfere with a user's enjoyment of their device. The matte finish does cause a slight reduction in clarity. It is an inevitable tradeoff between glare and clarity.