Bringing things in
The phone app
A FlutterFlow export in its own folder.
A project has a phone app only once someone asks for one: until then Apps › Phone app says it hasn't been started.
Bringing a FlutterFlow app
Start a project with FlutterFlow on the new-project page and pick your app's Download Code zip. It goes into the phone app's own folder in the repo, beside the website (each deploys from its own folder, so the website never serves the app). Its keystore and key files go to the Vault, never the repo. Flexi has the first word on it.
Shipping it to the App Store and Google Play from FlexOS has no screen yet: see What is not there yet.
Where next
Still stuck? Ask Flexi in your project, or ask a flexpert.