Make an offline / progressive web app. This is just a standard html/JavaScript app with a manifest file, that allows the browser to cache and install on the screen.
Phonegap like tool. Google for phonegap replacement. Phonegap allowed building mobile apps with html/JavaScript. While it is no more, there are replacements.
Native react. This is probably the most popular replacement for phonegap. Rather than use an html web viewer, it uses the native controls. But you use reacts standard jsx markup and JavaScript.