What does "Convert your project files into native app binaries" mean?

I received an email which served as an introduction to appflow. I jowever do not understand this statement.

“Convert your project files into native app binaries”

As far as i understand it, my ionic and vue js and capacitor app shall use the underlying browser.

Does app flow still produce apps that use the same concept as aforementioned or does it produce some truly native apps like would be produced by flutter or java?

Yes, a Capacitor app will run in a web view. Capacitor apps are native apps: real Android and iOS projects are generated and can be developed/edited just like traditional native apps. Native code and web-based code runs inside these projects/apps.

Appflow can build your Capacitor app into iOS and Android apps.