This App Symbol icon is a responsive icon. This means that it's optimized for four resolutions, from tiny 16x16 until highly detailed 80x80. The style comes from the latest Microsoft Office, which makes it perfect for any Windows applications, in particular, those with ribbon toolbar control. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 15,000 icons, all in the same style and quality.
The icon is a copy of the logo used by the App Store present on all iOS devices and run by Apple, Inc. The logo is enclosed within a rounded square on the outside, and a circle inside of the square. The icon represents the presence of an application.