.app

.app is an abbreviation of the word application. It may refer to:

Filename extensions

• Used in GEM
• Used for application bundles in NeXTSTEP, OPENSTEP, GNUstep, macOS, iOS, and iPadOS
• Used for app packages in HarmonyOS

Other uses

• .app (gTLD), a top-level internet domain

See also

• App (disambiguation)