Finder for Airpods is a new iPhone app that aims to ease user concerns of losing their new wireless earbuds. Using your AirPod's wireless signature, the app can search for your missing earbuds and even tell you if you are getting closer or further away.
How does it work? Well once you've noticed you've misplaced an AirPod, just fire up the Finder app on your iPhone, close the lid of your charging case and move about the area you suspect you lost it. The app's meter will tell you when or if you get close.
Update: Apple has pulled this app from the App Store. The developer explains "they didn't find anything wrong with the app itself, but rather they they didn't like the 'concept' of people finding their Airpods and hence was deemed 'not appropriate for the App Store." Check out LightBlue Explorer in the App Store for similar functionality.