There is a typical methodology or process flow for building an app, along with certain typical parts of the app that are included.
The three main parts of an application are:
- User Interface (UI)
- It refers to what the user sees on the screen and interacts with.
- Data
- It refers to the information retrieved from back-end systems that generally displays in the UI.
- Logic
- It defines the actions performed in response to user interactions or application events.
These parts need to be considered right from the start, where it is first recommended to create a high-level plan for the app.