Write an iPhone application

I need an iphone and ipad NATIVE app for my product - school management system. I am building a both web app and android app and looking for reliable and expertise in IOS platform for long-term work. Totally 4 user panels namely - Teacher/Parent/Student/Driver. Teacher Panel will have set of functionalities which can be reused for Parent panel. Parent panel and Student panel will be identical. Driver will have feq inquiry forms to submit. Regarding the UI and functionality, you need to duplicate the Android version (we are developing the android version) to IOS and include the functionality by consuming the webs services we developed.