Following a version for iPhone 5/5s, PureGear has released its PureTek Roll-On Screen Shield Kit for iPad Air and iPad mini ($20-$25). Available in antiglare and anti-fingerprint finishes for both sizes, the film is most notable for its included installation tray. Instead of having to try to line up a sheet of film, you simply insert the tablet into the plastic tray, pull the film over the screen, and used the included roller to work out the bubbles.…