Turning a website into a mobile app means moving the content and actions on your site into an app that opens from the phone's home screen, can send notifications and, where needed, is published on the App Store or Google Play. There is no single way to do it; the choice depends on whether the app needs to be in the stores, how much you need device features (camera, location, notifications, offline use) and your budget.
For most businesses the real question is not "can it be converted?" but "what will the app offer that the site does not?" Without a reason such as a saved basket, quick sign-in, order status notifications, scanning barcodes with the camera or carrying on when the connection drops, a well-built mobile site or a PWA is often enough.
This guide was prepared by Pan Innovation House, which also builds mobile apps. We took the store rules from Apple's and Google's own official pages, with the date accessed, and kept the quotations short.