The Apple iPhone is popular among users for its fast and efficient performance with an intuitive user interface. The iPhone apps extend the capabilities of iPhone, serving multiple purposes. Numerous iPhone applications are available in the App Store, catering to different needs of users as well as businesses. With the increased use of iPhones, the demand of their apps is also rising. Companies look for skilled and efficient iPhone application developers, who have the expertise and in-depth knowledge of the platform, tools, and development process. Further information : android app developer We have listed the eleven essential things that every developer should be aware of, for building iPhone applications. A developer should have the knowledge and proficiency in Objective-C, which is the programming language, used in developing iPhone apps. They should also have the competence in working with Swift, the latest programming language introduced to replace Objective-C. It is important for...