Answer 1

You can't simply do that

Web runs on js Which uses v8 engine

And apps are written in other languages like kotlin java swift c# etc
(Except web apps and hybrid app and pwas)
So web runs js means you can't run other Languages

Btw you can run it using webAssembly

But still I don't think so app would be productive then

Cause apps are made to utilize the native features which the available on device but on web you just get little much access to device

Imagine if your calling app relies on call api of Android and imagine you have converted it to web but you thought call api is a native api you can't use it in browser

So the simple answer would be you can't

Answer 2

If you want that then you want to rewrite the whole code based on the features you have on Web

Just like most app companies do

Like WhatsApp web for an eg

Its easier to convert a web app to an native app there are many resources for that but app to web a bit hard

Answer 3

actually if you wrote your app in kotlin there is a way of transpiling your code
take a look at https://kotlinlang.org/docs/js-overview.html

Answer 4

I want to know how to build application for mobile please

Answer 5

Lol no idea