Web application or website? A 30-second test, the differences that change the budget, examples, and UK prices: web app MVP from £10,000 in 6–8 weeks.
Short answer. If your users log in to do something, such as book, order, approve, upload, report or manage records, you need a web application. If visitors mostly read and then get in touch, you need a website. At Magora a web application starts with a free working prototype in 5–10 working days; a first release (MVP) costs from £10,000 and takes 6–8 weeks, and a full production web platform typically costs £25,000–£60,000 over 3–6 months. Figures exclude VAT.
This guide is for business owners and managers deciding what to commission. It gives a quick test, the differences that change the budget, examples of each, the third option most people forget (buying an off-the-shelf product), and what a web application costs in the UK.
Last checked: 2 November 2026.
The 30-second test: website or web application?
Answer five questions about what you want to build.
- Do users log in? Customers, partners or staff with their own accounts.
- Do they create or change data? Bookings, orders, applications, documents, records.
- Do different people see different things? Roles and permissions: a customer, a manager and an admin.
- Does it have to talk to your other systems? CRM, finance, stock, booking, payments.
- Does a process run through it? Something is requested, approved, scheduled, paid or delivered.
If every answer is no, you need a website. If one or more is yes, you need a web application, or a website with a web application behind a login, which is what most businesses end up with.
What is the difference between a website and a web application?
Both run in a browser and both have a web address, so they can look the same to a visitor. The differences that matter for a buyer are in what they do and what they cost to build and run.
| Website | Web application | |
|---|---|---|
| Job | Informs visitors and turns some of them into enquiries | Lets users get work done: book, order, approve, manage |
| Users | Anonymous visitors | Known users with accounts, roles and permissions |
| Data | Pages and articles edited in a CMS | Your business data: customers, orders, bookings, documents |
| Integrations | Usually a contact form, analytics and a newsletter | Often CRM, finance, payments, booking or stock systems |
| Security | Mainly keeping the site up and the CMS updated | Logins, access rules, audit trail, UK GDPR for personal data |
| Who builds it | A web design agency or an in-house marketer with a CMS | A software team: product owner, developers, QA |
| Running cost | Hosting, CMS updates, content | Hosting, monitoring, updates and support as the business changes |
The practical consequence: a web application is a piece of software, and it is built, tested and supported like one. That is why its price starts where a website's usually ends.
Examples of websites and web applications
Websites: a company site, a landing page for a campaign, a blog, a brochure site for a restaurant or a clinic, a portfolio.
Web applications built for one business:
- Customer portals, where clients see their orders, documents, invoices and requests.
- Booking systems with availability, payments and a back office.
- CRM systems built around how your sales or service team works.
- Internal tools: approvals, scheduling, field-team apps, dashboards that replace spreadsheets.
- SaaS products that you sell to other companies by subscription.
- Marketplaces that connect two sides, such as clients and service providers.
Gmail, online banking and Deliveroo are web applications too. They just happen to be built for millions of users rather than one company.
The third option: buy an off-the-shelf web application
Before building anything, check whether a SaaS product already does the job. If it covers almost everything you need, buy it and connect it to your other systems. A bespoke web application pays off when the process is what sets you apart, when per-seat subscriptions grow faster than the team, or when the workarounds around a standard tool cost more than building. We cover that decision in off-the-shelf or bespoke software.
We design and build web apps, portals and dashboards, from first prototype to launch and beyond. First release in 6–8 weeks; developers from £49/hour.
How much does a web application cost in the UK?
These are Magora's published 2026 bands for web applications, the same as on our web application development page.
| Stage | Typical time | Magora band (GBP) |
|---|---|---|
| Free working prototype of the core journey | 5–10 working days | £0 |
| Discovery: scope, architecture, fixed-price quote | 2 weeks | From £3,000 |
| First release (MVP), one or two core journeys | 6–8 weeks | From £10,000, most £10,000–£25,000 |
| Full production web platform with admin and integrations | 3–6 months | £25,000–£60,000 |
| Regulated or integration-heavy platform | 5–8 months | From £80,000 |
| Support after launch | Monthly | From £1,000 a month |
Rates behind the bands: from £49 an hour per developer, and £65–£70 an hour for a full team with QA and product ownership. A real example from our 2026 estimates: a narrow web pilot built around a third-party platform cost £11,127. More in software development cost UK 2026.
What moves the price most is not the technology but the number of user roles, the number of systems it connects to, and how much of the process has to be automated in the first release.
Most businesses need both
The common setup is a marketing website at your main address and a web application behind a login, for example at app.yourcompany.co.uk. The website is edited by marketing in a CMS; the application is built and supported by a software team. Keeping them separate lets each change at its own pace and keeps customer data out of the marketing site.
Three mistakes we see
- Running a business process on website plugins. Bookings, quotes or client areas bolted onto a CMS work at first and become fragile as the process grows.
- Building what a subscription already does. If a standard product fits, a custom build is money spent on solved problems.
- Starting without roles and data. Who sees what, and where the data comes from, decide most of the cost. Settle them in Discovery, not in the middle of the build.
Not sure which one you need? Send us a short brief: we will tell you whether a website, an off-the-shelf product or a web application fits, and if it is a web application, build a free working prototype in 5–10 working days. More about our web application development.
Sources: Magora web application development, UK software development pricing and software development cost UK 2026 pages (2 November 2026).
Alexander Bessudnov
Alexander is an accomplished Chief Product Owner with a proven track record of leading successful product development initiatives at Magora. With a passion for innovation and a keen understanding of market trends, Alexander plays a pivotal role in shaping Magora's product strategy and ensuring the delivery of cutting-edge solutions to clients.
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