The cost of developing an iOS app can be different depending on the level of complexity, the number of features, the design requirements, and the rates of the development team. Often costs may be starting from a couple of thousands for a small and simple app, to somewhere in the middle thousands or more for a advanced and technical application. Taking into account the design, development, test, the app store fees, maintenance, additional services and services using during the app creation process all are considered as must haves.