Deciding between a web app and a website depends on the nature of your business, your goals, and the functionalities you require. Let's break down the differences:

Website:

1. Information Presentation: If your primary goal is to present information to users, such as showcasing your business, providing contact details, and sharing content, a website might be sufficient.
2. Static Content: Websites are generally composed of static content that doesn't change frequently.
3. Brochure Effect: Think of a website as a digital brochure. It's a place for people to learn about your business without a high level of interaction.
4. Ease of Maintenance: Websites are often easier to build and maintain compared to web apps.

Web App:

1. Interactivity: If you need users to interact, perform transactions, or engage in activities like submitting forms, a web app is more suitable.
2. Dynamic Content: Web apps are dynamic and can display real-time data. This is crucial if your content or functionality changes often.
3. User Accounts and Personalization: If you require user accounts, personalized experiences, or user-specific data storage, a web app is necessary.
4. Complex Functionality: For complex functionalities like e-commerce, project management, or data analysis tools, a web app provides the necessary flexibility.

Considerations:

1. Budget: Websites are often more cost-effective to build and maintain. If you're on a tight budget and don't require complex interactions, a website might be the way to go.
2. Development Time: Websites generally have quicker development times compared to web apps. If time is a critical factor, a website could be a quicker solution.
3. User Experience: If the user experience involves a lot of interaction, dynamic content, or personalization, a web app can provide a more engaging and tailored experience.

In many cases, businesses opt for a combination, starting with a website and later expanding to a web app as their needs evolve. For example, a business might begin with an informational website and later incorporate a web app for customer accounts and online transactions.

It's advisable to consult with a web development professional to assess your specific business needs and determine the most suitable solution.