Couldn't you create a web-first app, then have the "app" that appears in the app just install a launcher icon that launches a browser window pointing to your website? This method (PWA?) I believe also lets you launch the browser without the browser control bar at the top (so it appears as a local app).
The best part of this is even if your app gets banned from the app store, it is still accessible to anyone that wants to bookmark your URL, and I believe that users can also install the local PWA icon without having to go through an app store (I may be wrong about that, just starting to learn about PWAs and what is currently possible, and what is coming up).
The best part of this is even if your app gets banned from the app store, it is still accessible to anyone that wants to bookmark your URL, and I believe that users can also install the local PWA icon without having to go through an app store (I may be wrong about that, just starting to learn about PWAs and what is currently possible, and what is coming up).