One of the key attractions of web apps is their ease of use; they don't require any installation on the user's device and offer cross-platform compatibility, working seamlessly across various operating systems. This versatility ensures they can be accessed from multiple locations, promoting flexibility and real-time collaboration.

Web apps also offer the advantage of automatic updates, ensuring users always have the latest features and security patches. This automatic updating, paired with their platform-independence, greatly enhances the user experience and reduces IT maintenance needs.

From a financial standpoint, web apps are highly cost-effective. They minimize the necessity for complex hardware or specialized software, reducing upfront investment and ongoing costs for both developers and users.

Web apps are built using a combination of front-end and back-end technologies. Front-end, or client-side, technologies like HTML, CSS, and JavaScript handle the user interface and interaction. Back-end, or server-side, technologies such as Python, Ruby, Java, or NodeJS manage data processing and storage, often in conjunction with a database system like MySQL, PostgreSQL, or MongoDB.

In essence, web apps provide a platform-independent, cost-effective solution for a wide range of applications, from personal tasks to business operations. They offer potential for growth and efficiency by streamlining processes, making them a key tool in today's digital landscape.