Now almost everyone uses a smartphone, and on average they spend 3 hours and 35 minutes in front of a gadget screen. Every day we are in close contact with a popular channel of information and communication, so smartphones as a source cannot be ignored. Nowadays the need to use mobile applications, which are not going anywhere from year to year and the demand for their use is only growing. Therefore, if there is a need to create a quality mobile or web application it is necessary to develop a successful scenario for the implementation of this project. First of all it is necessary to define the needs and set the goal of the app development. After all, such a tool is the most effective for your business, but it is not always possible to determine exactly what your users need. Therefore, it is worth reflecting on what would make life as easy as possible for your users, and therefore your customers, since in the end it all comes down to the user experience. When developing an app, you can simply put yourself in the shoes of the user who will need to download the app and try to maximize the functionality that will be of interest to the user. It is equally important to be sure of what you can achieve with the app you create, make sure you know as much as possible about your main goal.When developing an app, you need to know that there are some reasons why users will download a functional app that might be interesting, useful or recommended for use. Typically these same factors affect the use of gaming apps, but in this case users can also be influenced by a rating criterion such as criticism. This means that it is important to have a high rating and reviews in the app store. More often than not, such a rating is irrelevant for more functional applications. The next stage in the development of a quality app will be the concept, which is built on a combination with modern technology. Thus, the key factors in creating a successful app consist of a business plan, design, and technology. Therefore, it is important to determine why you are developing this particular app, who the target audience will be, and who will be involved in the development of the app. Most often people choose to use an app they like based on the aesthetic appeal of the interface and ease of use. This is why it is important to turn to qualified developers and designers, who would be able to implement the idea of creating a unique application using modern technology.