There is no definite answer to this question until the requirements are transparently laid out, and every aspect of the project is thoroughly analyzed. Many factors contribute to the cost of your application, such as the number of features integrated into your application, the type of features included, and the intricacy of your project. You should also be sure about your target audience, OS versions, requirements, additional application features, USP features, and other details before designing an iOS app. These all contribute to the cost of your application, including the payment charged by the developers for their hard work.