App Store

An application was installed on Petronella Osgood's computer by 10 May 2020. Its logo was a blue circle with a white outline, and 3 lines forming a letter "A" in its centre. At its top-right corner, a smaller red circle was also included, with a white "9" in its centre, (WC: The Zygon Isolation)

Behind the scenes
While the application was not named in WC: The Zygon Isolation, the application was named "App Store" in the real world, and was an app store platform.