Android Instant Apps on Android O up close
That little lightning bolt on the app icon means it is an Android Instant App
At last year’s Google I/O conference, we were greeted with a preview of Android Instant Apps. The idea behind them is to broaden exposure while also saving on data and storage. Where a natively downloaded Android application may be several dozen megabytes (or a few hundred megabytes) in size, not including related overhead storage or amount of data used, Android Instant Apps use only a fraction of both.
To some that may sound counter-intuitive, but the result is quite remarkable, and it expands the ways developers and businesses can reach users without necessarily forcing them to download an app or bear with a web-page, yet still use their product or service.
While Android Instant Apps is just If a friend or colleague were to send you a link (and you have a compatible device) to a Red Bull video, or an available apartment on Hot Pads, or New York Times crossword puzzle, because these early partners have been enabling Android Instant Apps (among a few dozen), it is possible you clicked on these links and used the Instant App, in lieu of an optimized web-page in Chrome.
Things that are NOT allowed: