Why develop iOS apps ? They are small compact apps that a person from beginner to experienced can work with. They are simple to work with and understand. They do what you design them to do. When developing an app for iOS it is important that the developer has the correct tools to work with. You will need a mac that is running Mac OS X version 10.8 or higher. Every developer should register as an Apple Developer. This is free to do and by doing so will allow you to download Xcode. Next step after registering is to install Xcode on your device. This is the IDE ( integrated development environment) used by apple to work with iOS. Xcode can also be used for tvOS and the macOS. From this interface you can start planning out the different parts of your app and writing the code. Xcode supports various types of programming languages such as c , c++ and python.