Mobile app users reached 7.1 billion last year, and it is still adding. Every day, there is a new app added to the Apple or Google Play Store for the users. It can be a gaming app, health and fitness app, business app, shopping app for big brands, buying and selling apps, etc. These apps have become a part of our shopping or scrolling through new businesses every day. This has made the mobile app development industry grow by leaps and bounds. The app developers are busy making simple to complex apps and even customized apps for the brands. However, the cost of developing these apps varies from year to year. Cost of Building the Mobile App The app development includes many things, from the planning phase to the execution phase of the mobile app. If you are getting the customized app, it includes the proper documentation, quality assurance phase, features and functions, complexities, security protocols, etc.