“Killer app” in Japanese
Short answer
Killer app in Japanese is “キラーアプリ” (kiraaapuri). Full meaning: killer app, killer application.
Other ways to say “Killer app” in Japanese
キラーコンテンツ
kiraakontentsu killer content (content that assures the success of a product, platform, service, etc.), killer app
キラーアプリケーション
kiraaapurikeeshon killer application, killer app
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