Progressive Web Apps (PWAs) are modern, high quality applications built with web technology. PWAs offer similar capabilities to mobile and desktop apps, they are reliable even in unstable network conditions, and are installable making it easier for users to find and use them.
Most users are familiar with installing applications, and the benefits of an installed experience. Installed applications appear on operating system launch surfaces, such as the Applications folder on macOS X, the Start menu on Windows, and the home screen on Android and iOS. Installed applications also show up in the activity switcher, device search engines such as Spotlight and in content sharing sheets.
Most browsers indicate to the user that your Progressive Web App (PWA) is installable when it meets certain criteria. Example indicators include an Install button in the address bar, or an Install menu item in the overflow menu.