Think of a responsive website and add native app functionalities to it. They’re developed with lightweight web technologies of HTML, CSS, and JavaScript as speed is essential for conversions.
In 2022, internet traffic is split 38.6/59% between desktop and mobile. As 76% of customers expect a comparable product experience across channels, companies turn towards progressive web apps (PWAs) — advanced websites that provide app-like functionalities on mobile devices.
Read more here
https://www.monterail.com/blog/pwa-examples
To get started, here are the links;
https://learn.microsoft.com/en-us/microsoft-edge/progressive-web-apps-chromium/how-to/