Web app development is the process of creating application software that runs on web browsers. It involves designing, building, and maintaining interactive, user-friendly applications accessible via the internet, using technologies like HTML, CSS, JavaScript, and backend frameworks. Web apps can perform various functions, from eCommerce platforms to SaaS tools, providing seamless user experiences across devices without the need for installation.

To create a web app, define your idea, plan features, and design the UI/UX. Choose a tech stack, develop the frontend and backend, integrate databases, test for bugs, deploy on a server, and maintain regularly.

Web application development can be both easy and challenging, depending on the complexity of the app. For simple apps, it can be straightforward, especially with frameworks and tools available. However, complex apps require in-depth planning, design, coding, testing, and maintenance, which can take time and technical expertise.

Examples of web apps include Google Docs for document editing, Trello for project management, Spotify for music streaming, and Netflix for video streaming. These apps are accessible via web browsers without installation.

The 7 steps to creating an app are: 1) Define the idea, 2) Plan features and design, 3) Choose a tech stack, 4) Develop the frontend and backend, 5) Test thoroughly, 6) Deploy the app, 7) Maintain and update regularly.

The app design process includes: 1) Research and understanding user needs, 2) Defining features and functionality, 3) Creating wireframes and prototypes, 4) Designing the UI/UX, 5) Testing, and 6) Refining based on feedback.