An Android feature starting with Android 5.0 in 2017 that runs an app without installing it. Google Play Instant allows an app to run very quickly like a Web app activated within the browser. No software or data are installed in the user's device. Games were a popular choice for making apps instant. Instant apps were also created to entice users to install the full version, often for a fee. For developers, the difficulty of making an existing app instant depended on the logic of the original code.
Instant apps have fallen out of favor. Today, many mobile apps are designed to go to a website that serves desktop and mobile users alike. See
Web application and
responsive Web design.