Web App vs. Website — What's the Difference and Which Do You Need?

When Canadian business owners come to us needing something "online," the first question we ask is: do you need a website, or a web app? The distinction matters because they're built differently, they cost differently, and they solve different problems.

Getting this wrong is expensive — either you pay for a web app when a website would have done the job, or you build a website and quickly discover it can't do what your business actually needs.

The One-Sentence Difference

A website presents information. A web app does things.

Websites are primarily read. Web apps are primarily used. That's the core distinction — and everything else (cost, complexity, timeline) flows from it.

Real Examples: Website vs. Web App

The same industry can need either, depending on what the business actually wants users to do:

Business	Website Use Case	Web App Use Case
Medical clinic	Services, hours, location, doctor bios	Patient portal with online booking and intake forms
Restaurant	Menu, hours, reservation phone number	Online ordering system with real-time kitchen dashboard
Law firm	Practice areas, attorney profiles, contact	Client portal for document sharing and case updates
Gym / fitness studio	Class schedule (static), pricing, contact	Class booking with memberships, attendance tracking, payments
Staffing agency	About page, services, job listings	Candidate portal, employer dashboard, placement tracking

The Grey Zone: Websites With App Features

Many projects sit in between. A marketing website might have a contact form that feeds a CRM, or a basic booking widget powered by a third-party service like Calendly or Acuity. These are technically websites with embedded functionality — not true web apps.

The line gets crossed when:

• You need users to create accounts with their own data and history
• You need to store and process information specific to each user
• Different users need to see different things (customer vs. admin view)
• Transactions need to be processed and tracked (payments, bookings with inventory)
• You need real-time features (notifications, live updates, messaging)

If any of those apply, you're building a web app — even if the design looks like a website.

How Much More Does a Web App Cost?

A custom marketing website from a Canadian agency typically runs $5,000–$15,000 CAD. A web app starts at $15,000–$20,000 for a simple version with basic user accounts, and goes up quickly as features are added.

The cost difference comes from the backend: the server, database, and business logic that makes a web app function. A website serves files. A web app runs code in response to user actions, validates data, stores records, sends emails, processes payments, and coordinates between multiple users simultaneously.

Which One Do You Actually Need?

Ask yourself these questions:

• Will users log in? If yes → web app.
• Will users submit data that gets stored and retrieved later? If yes → web app.
• Will users pay for something online (not just a contact form)? If yes → web app.
• Will different users see different information? If yes → web app.
• Is the main goal to inform visitors about your business? If yes → website.
• Do you mainly need to appear in Google search results and generate leads? If yes → website.

Many businesses genuinely need both: a public-facing marketing website to rank in Google and generate leads, plus a web app for customers to use after they've signed up. These can live on the same domain — and often should.

Can I Start With a Website and Add App Features Later?

Sometimes — but it depends on how the website was built. A WordPress site can have plugins added, but adding true user account functionality (custom data models, business logic, multi-role access) often means rebuilding from scratch rather than extending. If you know you'll eventually need web app features, it's worth planning for them architecturally from the start, even if you don't build them immediately.

A good development team will ask about your 12–24 month plans before recommending a technical approach, specifically to avoid this trap.