App Development Cost · 2026
How much does it cost to build an app?
The honest answer, the real ranges, and the part of the budget most founders underestimate before they ever speak to a developer.
Most apps cost between £30,000 and £300,000. The complex ones go well beyond that.
That range is wide for a reason. An app is not a single product. It is a stack of decisions about platform, features, design quality, team, and what happens after launch. Each of those decisions moves the number, sometimes by tens of thousands.
So the cost question is the wrong place to start. The more useful question is what drives the cost, and which of those drivers you actually control. Some you do. Some you only think you do. The biggest factor in your final bill is rarely how many developers you hire or which framework they choose.
It is the quality of thinking that goes in before any code is written. Most budgets account for development. Very few account for the cost of building the wrong thing.
This page gives you real numbers throughout. It covers the cost ranges, the cost drivers, the UK market specifically, what an MVP actually costs, and the hidden costs that most quotes leave out. By the end you should be able to walk into a conversation with a developer knowing roughly what you should be paying, and why.
App development cost ranges, without the hedging.
These are realistic ranges for the build itself. Strategy, design, testing, and launch sit on top of these numbers, not inside them.
| App type | Typical development cost |
|---|---|
| Simple or single-function app | £30,000 to £60,000 |
| Mid-complexity app | £60,000 to £150,000 |
| Complex or multi-platform | £150,000 to £400,000 |
| Enterprise or regulated industry | £300,000 to £1,000,000+ |
Development costs only. Strategy, design, testing, and ongoing maintenance are not included in these figures.
What actually drives cost
Five variables that account for most of the variance.
Understanding these before you talk to a developer gives you a more grounded conversation and a significantly better chance of getting an accurate quote.
01 Platform choice
iOS only, Android only, or both. Cross-platform frameworks like React Native or Flutter can reduce build cost, but they carry trade-offs in performance, native feel, and long-term maintenance. The right answer depends on your audience and your product, not on cost alone.
02 Feature complexity
A simple app that stores and displays information costs far less than one with real-time updates, payments, third-party integrations, or AI. Each of those adds engineering time, infrastructure cost, and ongoing maintenance. Features compound.
03 Design quality
Generic, templated UI is cheaper. Considered UX and UI design takes time, and it is the difference between a user staying or leaving after the first session. Design is also where most build cost gets locked in, because every screen has to be engineered as well as drawn.
04 Team type
Freelancers, offshore agencies, UK agencies, and in-house teams all sit at different points on the cost and risk curve. The cheapest day rate often turns out to be the most expensive total bill once coordination, rework, and quality issues are added in.
05 Post-launch requirements
Hosting, maintenance, OS updates, bug fixes, and support are ongoing costs that most budgets underestimate. A reasonable rule of thumb is 15 to 20% of build cost per year. If your budget runs out at launch, your app does too.
The phase most people underestimate
15 to 25% of the budget determines 80% of the cost.
Most cost conversations start with development. That is the wrong starting point. Strategy and design typically represent 15 to 25% of total project budget, but the decisions made there determine roughly 80% of total cost.
Poor feature prioritization does not disappear in development. It compounds. A scope that was not tested at the strategy stage becomes a screen that has to be redesigned during build, then a flow that has to be re-engineered after testing, then a release that has to be patched after launch. Each of those steps costs more than the original decision would have done if it had been made properly the first time.
Budget breakdown by phase
What a complete app budget looks like from start to launch.
These are typical ranges. Treat them as a planning tool, not a quote. The exact split depends on the product, but the shape is usually similar.
- Discovery & strategy: 10 to 15%
- UX & UI design: 15 to 25%
- Development: 50 to 60%
- Testing & QA: 10 to 15%
- Launch & marketing: 10 to 20%
UK market
App development costs in the UK.
UK rates are higher than offshore alternatives, but the comparison is rarely as simple as the day rate suggests. UK teams carry lower coordination risk, work in your time zone, share legal and contractual frameworks, and remove a long list of small frictions that quietly add cost to offshore engagements.
MVP cost
How much does an MVP cost?
An MVP is not a cheap app. It is a focused one. The point of an MVP is to learn whether the product idea works by building the smallest possible version that still tests the real question.
A realistic MVP budget for a digital product in the UK sits between £40,000 and £120,000. Anything under £40,000 typically means cutting either design quality or core functionality to a point where the result no longer tests the idea fairly.
Costs by app type
Costs vary significantly by industry and feature set.
These are the most common app types we are asked about. Each one has its own cost shape, regulatory environment, and set of expectations. The guides below cover them in detail.
Hidden costs
The costs most budgets miss.
Build cost is the part of the budget most quotes focus on. These are the parts they often leave out. Each one is predictable, and each one is regularly forgotten until it arrives as a surprise.
App store fees: Apple charges a 99 USD per year developer account fee. Google charges a one-off 25 USD. Both stores take a percentage of in-app revenue.
Ongoing maintenance: OS updates from Apple and Google break things on a regular cadence. Plan for 15 to 20% of build cost per year in maintenance just to keep the app running, before any new features are added.
Third-party API costs: Maps, payments, messaging, analytics, authentication. Many of these have free tiers that quietly become expensive at scale.
Compliance and security: Depending on your sector, these are not optional, and they have a real cost in legal review, technical implementation, and ongoing audit.
Redesign after launch: If the first version goes out without proper strategy and design behind it, the version 2 redesign is usually larger than the original build.