Hello, I hope you are doing good. I have read the project description and had a look at the provided photo. I understand you require a developer with expertise in iOS. You want to integrate a web view in your app which can only render a particular URL. Moreover, credentials have to fetched from app DB, which I understand is CoreData or RESTful APIs. I would like to state that default UITabBarController supports only 5 tabs, but you shouldn't be worried as I have tackled this type of problem in my 2+ years of iOS app development. There are more than one solution to your problem.
I have been associated with iOS app development for 2+ years and in this course of time I have worked in industries like OTT, Car Rental Services, Logistic, etc. I would love to showcase my work if we get to chat/call.
If you think I'll be a better choice I would like to connect with you to better understand your app so that I can start working right away. Hoping for a positive response from you.