Turn my directory into a phone app.

I am looking to explore whether my existing online directory can be turned into a true mobile phone app for iOS and Android.

Not a basic PWA or a simple website wrapper. I would like something that feels more like a native app, with a cleaner mobile experience, app-store availability, and the ability to grow over time.

The goal is to create an app version of the directory that allows users to browse listings, search/filter businesses, view listing details, and potentially add features later such as maps, favorites, claim listings, business updates, push notifications, or paid listing upgrades.