I've run Gleam compiled for the Erlang target using the elixir-desktop project as a "native" Android app. Meaning that the Erlang runtime is packaged with Elixir and the Phoenix framework into an APK. The app runs your code in Phoenix and opens a LiveView frontend that serves as the app's UI.

Right now I'm working on a streaming music client in Gleam that runs as a progressive web app in browsers, desktops, and mobile. It looks just as native as the elixir-desktop app and has integration to the OS media notifications. This is using the JavaScript target.

If you are able to make mobile apps with JavaScript in other ways (Cordova?), then you can take Gleam's JS output and use that in such a system.