Noun
killer app (plural killer apps)
(informal, computing) A killer application.
If you think about YouTube, YouTube is a 'searching the world's videos' problem, right? They all have to be there, but how do you find them? What I guess I'm trying to say is that search is still the killer app. Eric Schmidt
We want to reinvent the phone. What's the killer app? The killer app is making calls! It's amazing how hard it is to make calls on most phones. We want to let you use contacts like never before - sync your iPhone with your PC or mac. Steve Jobs
As a technologist, I'm obsessed with searching for the next killer app. Maynard Webb
So evidently music was a killer app and is a killer app for computer and the Internet; it just took the tech industry a long time to hear that message. Thomas Dolby