My role is not only to deliver ios app but also an app with UI and UX element. I know coding is an important part of development but along with coding, you should have good UI sense also from my point of view. There are many apps in the market but an app which fulfills user demand with appropriate features and UI is the best app. I always try to improve some UI sense by reading blogs and implementing some great UI designs which are there in the market and liked by the user.