p.s. If you're wondering why you don't hear more about web apps, it's because Apple and Google hate them. Web apps totally bypass Apple and Google app stores.

Apple and Google enjoy controlling and taxing apps, but they have no control over web apps and don't get any money from them.

Apple even tried to stop web apps completely, luckily they had to back off: https://open-web-advocacy.org/blog/apple-backs-off-killing-web-apps

Web apps are a way of getting apps directly from the people who make them, without big tech getting in the way.