Smosh iShutUp

Smosh iShutUp is a mobile application created by Smosh and produced by DEFY Media for Android and Apple mobile devices. It is a simple app in which if users speak through the phone's microphone it will respond in Smosh's iconic SHUT UP! at the start. Users have the option to adjust the sensitivity of the app's reaction. The app costs $0.99 in the Android app store and has a 4-star rating. The app is not available in the Apple store anymore, however, many developers have spawned very similar apps.

In videos
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Around the time of its release, the app was integrated in the Smosh video Ian Gets Lucky. A dramatized Ian uses the app while walking on the sidewalk and unwillingly attracts the attention of a pedestrian that believes Ian is telling him to shut up.