As a user, mobile apps are software programs that you can download and access directly using your phone or another mobile device, like a tablet or music player. You can run it whenever you want and perform certain tasks through its user interface. However, creating and maintaining a mobile app is another story.
To develop a well-functioning, user-friendly app that looks great on all devices and operates smoothly across different platforms, you need to use a programming language (such as Swift, Objective-C, Java, or Kotlin) and a set of development tools that enables you to create software for your chosen mobile operating system. You’ll also need to have some understanding of design principles since an app’s user interface is key to its success.