Promote your App sharing a single QR Code. When users scan an App QR Code, they are redirected to the optimal App Store depending on their device and location.
If you advertise your app with a QR Code on a poster, you can direct the user to the App Store, Play Store or Amazon Store with just a single App QR Code.
Yes. You can install a browser extension that will allow you to follow an URL just like you were scanning a QR Code from an Android or an iOS device.