Android Instant Apps make a new way to try apps immediately without having to first install them on your mobile device. Unlike native apps that have to be downloaded in full, Instant Apps launch with just a tap on a URL. Via a new “Try it Now” button, users can start using an app without installing it.
You can choose whether you want to use Instant Apps by changing the setting:
1. On your device, open the Settings app Settings.
2. Go to Google Search and then Instant Apps.
3. Move the toggle to opt in or out.
If you do not see Instant Apps in Google settings, then it is not yet available on your device.