The APP file extension is used by Mac OS X for their software program. APP file can be run on the Mac OS X by double-clicking the file.
The APP file extension is associated with FoxPro and used for automating the procedures. For example, APP file can transform data values, create new label size and analyze source code.
The APP file extension is used by Symbian OS for their software program. Symbian OS is mobile phones or Smartphone operating system. APP file comprises an application together with a .RSC resource file. APP file can be run on the Symbian OS.