Reskin existing app swift+firebase.

Risking the app for ios swift. Also, do small changes like auth login and invite via firebase. Payment only after the app is accepted to the apple store. Will need to make changes if needed to get accepted. May also ask for diawi or testflight example. Show examples of ios apps you have done. The budget is around $300-500 USD for this work. Looking for a long-term relationship. This is a test project.