Q. Do you want to develop your app using native iOS coding or cross-platform?
Q. Could you provide us the link of current website for better understanding?
Q. Would you provide the wireframe and project requirements document for detailed understanding of the project flow and features needed?
Q. Would you provide the UI assets like images, logos, icons, splash screen, sound files (if any).
Q. Are the web services needed to transfer the data between the server and the app?
Q. Do you want to integrate Facebook/Twitter?
Q. Are you planning for In-app purchases, Push Notification features, Ads sources?
Q. Which iOS versions and iOS devices do you want support for?