It's one of the first questions founders ask us, and one of the easiest to get tangled in: do I need a website, or a web app? The words get used interchangeably, the answer changes what you build and what it costs, and getting it wrong is expensive. Here's a clear way to think about it.
The short answer
A website mostly shows people information. A web app lets people do something - sign in, enter data, get a result back. Most early-stage businesses need a great website first. Some need a web app instead, and a few need both. The deciding question is whether your visitors need to read or work.
What a website is for
A website is your storefront, your credibility, and your pitch. It explains who you are, what you offer, and why someone should trust you - then points them toward a next step like booking a call or buying a product.
A website is usually the right call when:
- You need to be found, look credible, and explain your offer.
- Most visitors will read, browse, and then contact or buy.
- Your content changes occasionally, not constantly.
- You want something live relatively quickly and affordably.
Marketing sites, portfolios, service businesses, and most small-business launches start here. (An online store is a specialised website - see our note on choosing an e-commerce platform.)
What a web app is for
A web app is software that runs in the browser. People log in and do work inside it - track something, manage something, calculate something, collaborate with others. Behind it sits a database and logic that remembers state and responds to each user individually.
You likely need a web app when:
- Users have accounts and see their own data.
- The product is the thing people use, not just a page about it.
- There are dashboards, workflows, bookings, calculations, or saved progress.
- Different people (admins, staff, customers) need different views or permissions.
Dashboards, internal tools, booking systems, planners, and SaaS products are all web apps. They take more design and engineering than a website because there's real logic and data underneath - which is also why they're quoted per project rather than from a template.
A simple way to decide
Ask yourself one question about your visitors: do they need to read, or do they need to work?
If the main thing a visitor does is understand you and take one action (buy, book, enquire), you need a website. If the main thing they do is log in and use a tool repeatedly, you need a web app.
A second test: imagine removing the login. If your idea still makes sense without accounts and personalised data, it's probably a website. If it falls apart without them, it's an app.
Can it be both?
Often, yes, and this trips people up on cost. A common, healthy pattern is a marketing website that explains and sells the product, with a web app that customers log into. They look like one brand but are two pieces of work. Knowing that early prevents the awkward moment where a "simple website" quote collides with app-sized requirements halfway through.
How we approach it at LyfWis
Before writing any code, we figure out which of these you actually need - and we'll tell you if it's the cheaper option. Plenty of founders arrive asking for an app and leave with a sharp website that does the job for a fraction of the cost, or vice versa. You can see the full range of what we build, and if you're not sure which side of the line you're on, that's exactly the kind of thing a short conversation sorts out.
Frequently asked
Is a web app more expensive than a website?
Almost always, because it includes a database, user accounts, and custom logic rather than mostly content. A website can launch quickly; a web app is quoted per project based on its features.
Can I start with a website and add an app later?
Yes, and it's a sensible path. Many businesses launch a website to establish presence and validate demand, then build the app once they know exactly what users need.
What about a mobile app?
A web app runs in any browser and needs no app-store download, which makes it faster and cheaper to launch and update. A native mobile app is a separate decision, usually worth it only once you have real users and a clear reason to be on their home screen.