When you turn on app install optimization, Google can tell which parts of an app you use the first time you open it after installation. When enough people do this, Google can optimize the app to install, open, and run faster for everyone.
If app install optimization is turned on, your device tells Google which parts of the app you accessed and in what order when you first open the app after installing. This information is combined with data from other people who use the app to find trends and identify which parts of the app are most important to everyone.
This feature doesn’t collect any personal information, such as your name or email address, and doesn’t look at anything outside of the app, such as other apps or content on your device. It also doesn’t collect information about content uploaded or downloaded in the app, such as images in a social feed, or rankings on a leaderboard.