killer application

Noun

 * 1) A technological product that is so good, or so innovative, that it is irresistible to potential customers; especially a software product that persuades people to buy the hardware needed to use it.

Usage notes
Usually used in the abbreviated form:.

Translations

 * Finnish: läpimurtosovellus
 * German: Killer-Anwendung, Killer-Applikation
 * Japanese: キラーアプリケーション
 * Swedish: genombrottsprogram