This airport valet can't keep the TSA from hassling you, but it may calm your nerves after they do. Get updates on departure status and gate number and even download maps of your flight path for offline viewing once you're airborne.
WIRED Covers 4,000 airports and 1,400 airlines worldwide.
TIRED Annoying nudges to upgrade to Pro version (iOS: $9.99, Android: $4.99), which is really only worth the cost for frequent fliers.