DuoDrawer is a PWA.
PWA stands for Progressive Web App. This means, you can save the item to the homescreen and use it as an app. These banners will be more assertive and help you convert users to installing your app easier.
Badges
Add to Home Badges are simple elements that show where your device menu is to indicate how to install the page to your home screen. These are the default interaction of most websites.
Action Sheets
The new age of showing Installation prompts for PWA's is by using Action Sheets. These are gorgeous interfaces that can deploy automatically and show the install prompt on Android or the instructions for installing on iOS.