killer app

1. an application that surpasses its competitors.

Word History and Origins

Origin of killer app¹

1985–90

Example Sentences

There’s no “killer app” at the moment that really requires it, says Mr Kernahan.

From BBC

“While there still isn’t a killer app… there are lots of areas where neuromorphic computing will provide significant gains in energy efficiency and performance, and I’m sure we’ll start to see wide adoption of the technology as it matures,” he says.

From BBC

Linda Weissgold, who retired as deputy CIA director of analysis last year, thinks war-gaming will be a “killer app.”

From Seattle Times

Can TikTok's owner afford to lose its killer app?

From BBC

For her, the new killer app is a very old one — playing great live shows.

From Los Angeles Times