How Much Does It Cost to Develop an App in the UK in 2026? (Full Pricing Breakdown)

The cost to develop an app in the UK in 2026 ranges from around £10,000 for a focused MVP to well over £150,000 for a platform with payments, integrations and a heavy back end. That spread is why so many quotes feel impossible to compare. One agency prices a single user journey on one platform, another prices the whole product, and both call it "your app".

This guide breaks the number down the way a project manager would: what you are paying for, what UK teams charge per day, which costs tend to appear only after you sign, and how much you can save by working with a certified development company in Spain instead of a London agency. All prices are in pounds and exclude VAT unless stated otherwise.

App development cost in the UK at a glance

These are the ranges UK agencies publish for 2026. They come from agencies that sell development, so read them as market benchmarks rather than neutral data. They are still useful, because they show where quotes tend to cluster.

The MVP row is the widest because the term means different things to different people. For one agency an MVP is a single flow on one platform. For another it is a product ready for paying customers. London and Manchester agencies sit at the top of that range, smaller studios outside the big cities at the bottom.

What drives the cost to develop an app in the UK

Every quote is hours multiplied by a rate. The rate depends on who builds it. The hours depend on six decisions you make before anyone writes a line of code.

1. Platforms

Building for iOS and Android with a cross-platform framework such as Flutter or React Native costs roughly 15% more than a single platform, based on the projects behind our calculator. Two separate native apps cost around 35% more, because you are paying for two codebases and two sets of testing. For most business apps, cross-platform is the sensible default.

2. Features and how they interact

Push notifications or a camera upload are small additions. Real-time chat, offline mode, bookings with availability rules or anything involving AI are not. The cost rises fastest when features depend on each other: a booking that triggers a payment, which triggers a notification, which updates a dashboard.

3. Accounts, roles and the admin panel

A simple login is a few days of work. Several user types with different permissions, plus a back office where your team manages content, users and activity, can easily add several weeks.

4. Back end and integrations

If you already have an API, the app mostly sits on top of it. If the back end, database and architecture have to be built from scratch, that is often the largest single line in the budget. Each integration with your CRM, ERP or payment provider adds testing and edge cases.

5. Design

Standard components and a clean layout are cheap. A full UX process with research, prototypes and a custom interface costs more, but it usually pays for itself in fewer changes later.

6. Compliance

Every UK app that handles personal data has to meet UK GDPR. Apps that move money or handle health data carry extra requirements, which is why agencies rarely quote FCA-aware fintech apps below £100,000.

A worked example: a booking app for a group of clinics

Take a physiotherapy group with eight clinics in the Midlands that wants patients to book and pay from their phones. The first version needs iOS and Android, patient accounts, a calendar per clinic, card payments, reminders by push notification and a simple back office for reception staff. It also has to read and write appointments in the practice management software the clinics already use.

That is one core journey, but with a payment, an integration and two types of user. Going by the ranges above, we would expect a UK agency to quote it at somewhere between £35,000 and £60,000. Leave out the integration and reception staff keep two diaries in sync by hand, which saves money now and costs time every day after launch. That trade-off is the kind of decision that moves a quote by thousands of pounds.

UK developer rates in 2026: agency, contractor or in-house

Once the scope is clear, the rate decides the final figure. These are the three options most UK companies weigh up.

• Agency: London product studios charge around £45–£90 an hour and boutique digital agencies £60–£140, according to Magora's 2026 guide. You pay for design, project management and testing as well as development.
• Contractor: the median day rate for mobile app contracts in the UK is £500, with the middle half of the market between £406 and £575 (ITJobsWatch, six months to October 2026). Good for extra capacity, harder if you need a whole team.
• In-house: the median advertised salary for a mobile developer is £60,000 a year (ITJobsWatch). Add employer National Insurance, pension, equipment and recruitment, and one developer costs well above that. A first version usually needs more than one person.

In-house makes sense when the app is your core product and you will develop it every week for years. For a first version, most companies get there faster and cheaper with an external team.

Costs that rarely appear in the first quote

The build price is only part of the bill. These items are worth asking about before you sign:

• Store accounts. The Apple Developer Program costs US$99 a year and a Google Play developer account has a one-off US$25 registration fee.
• Hosting and third-party services: servers, databases, maps, SMS, email and analytics. Small at launch, they grow with your users.
• Maintenance. Plan for 15–25% of the build cost every year for OS updates, security patches and small improvements.
• Store commissions if you sell digital goods or subscriptions inside the app. Apple and Google both take a share, so check the current rates in each store before you set your prices.
• VAT. Most quotes exclude it. At the standard UK rate of 20%, a £40,000 quote becomes £48,000 if you cannot reclaim it.

UK agency vs certified companies in Spain: the real cost difference

This is where the budget changes most. Spain has a large pool of experienced mobile developers, salaries well below London's, and only a one-hour time difference with the UK. Yeeply selects certified development companies there, matches each project with the one that has already built something similar, and supervises the work from start to finish. You keep a single point of contact and a contract with Yeeply.

The saving does not come from cutting corners. It comes from lower salaries and overheads in Spain. What protects quality is the selection: companies with a track record in your type of app, written milestones, and someone at Yeeply checking that each one is met.

Be wary of quotes that are dramatically cheaper than either column. As Magora points out, they often hide freelancers behind a UK invoice, and the cost appears later as rework.

Estimate your own app in two minutes

Answer a few questions about your app (platforms, accounts, payments, features and integrations) and the calculator gives you a price range in pounds, excluding VAT, based on what our certified companies charge.

How to get a quote you can actually budget against

1. Write down the one journey that matters most. For example: a customer books a slot and pays. Everything else can wait for version two.
2. List the systems the app must talk to, with the name of each tool and whether it has an API.
3. Decide on platforms and devices before asking for prices, so every quote covers the same thing.
4. Ask for the quote in phases, with hours per phase. A single total tells you nothing about where the money goes.
5. Ask what happens after launch: warranty period, maintenance cost and who owns the code.

With that brief, the cost to develop an app in the UK stops being a guess. If you would like a tailored proposal, click on "Receive price estimate" at the top right of yeeply.com or write to sales@yeeply.com. We will match your project with the certified company best suited to it and send you a proposal with a fixed scope and price. You can also see how we work on our mobile app development page, or browse more price guides in Pricing.