
Table of Contents
Published UK agency guides put MVP-scale app design anywhere from about £3,000 to £60,000, with higher figures for larger products. Those numbers come from agencies’ own blog posts and describe different scopes, and the research behind this article did not identify a reliable independent UK benchmark for standalone app design. They show how far quotes can vary, not what your project should cost.
What sets your budget is the design work the product needs: how much uncertainty has to be resolved, which deliverables you need, and how much research and testing sits behind them. The rest of this article looks at what the published figures say, what each stage of design involves, how to read an estimate and how to plan a budget without a dependable benchmark. It covers design only; development appears only to mark the boundary.
That is also why studios that offer app design and UX work will usually ask about the product, the journeys it must support and the deliverables you expect before naming a number.
What the Published UK Figures Say, and Why to Be Careful
Three sources are worth knowing, because they show the shape of the problem as much as the numbers.
- A Manchester agency’s 2026 guide (Peachr, July) lists MVP design at £3,000–£20,000 and a full iOS and Android app at £4,000–£35,000. Further down the same page the figures become £6,000–£20,000 and £10,000–£45,000.
- A London agency’s guide (UX Design Agency, June 2026) puts zero-to-one MVP UX/UI design at £15,000–£60,000, which it presents as a typical fixed-price range depending on scope and research involvement.
- Clutch’s UX pricing guide (updated September 2026) lists an average of $50–$99 an hour for UK UX/UI agencies. That is in US dollars, covers UX/UI broadly rather than apps specifically, and is a rate rather than a project cost.
Read together, the two project guides overlap only between £15,000 and £20,000 and describe different scopes, so they are not like-for-like. Each is written by a business that sells design, with no stated method for how its ranges were calculated. Use them to sense-check the order of magnitude of a quote, not to judge it.One further distinction matters. Some guides to total app development say design takes a share of the overall budget. That describes how a build budget is divided, not what a standalone design engagement costs, so it is no use for pricing design on its own.
What You Are Paying For: The Stages of App Design
“App design” bundles several kinds of work. A quote should say which are included, and some can safely wait.
- Product discovery. Clarifies the problem, audience, goals and constraints. Hard to skip while the idea is still forming.
- UX research. Evidence about users from interviews, surveys, behaviour data or observation. Scale it to how much you do not know.
- Information architecture and user flows. How features are organised and the paths people take to finish tasks. Almost always needed.
- Wireframes. Low-fidelity layouts that settle structure while changes are cheap.
- UI design. The visual layer: typography, colour, spacing, components and screen states. It can stay light for a validation prototype.
- Interactive prototypes. Clickable flows people can try before anything is built.
- Design systems. Reusable components and rules. Often the first thing to defer; a lightweight set usually does early on.
- Developer handoff. Specifications, assets and behaviour notes so engineers can build accurately. Needed as the build approaches, not for validation.
Few projects need all eight. The order also varies, and it helps to understand how an idea moves from discovery to prototype before you commission any of it.
Three Illustrative Project Types
The table shows how scope changes the work. These are illustrative categories for thinking about budgets, not Acnoon packages, and they carry no prices or timelines because the evidence above does not support them.
| Project type | Typical scope | Likely design deliverables | Main drivers of effort |
| Focused prototype to validate an idea | One primary user, one core journey, a small number of screens | Light discovery, a user flow, wireframes, a clickable prototype, optionally a test with a few users | Clarity of the brief; fidelity needed; how many people you test with |
| MVP with defined core journeys | One or two user types, several connected journeys, one or two platforms | Discovery and research, user flows, wireframes, UI design, prototype, usability testing, lightweight component set, handoff files | Number and branching of journeys; unknowns about users; error and edge-case states; platforms |
Screen count appears nowhere in the last column, deliberately. A sign-in screen and a scheduling interface with conflicts and time zones each count as one screen, yet demand very different amounts of thought. Many “screens” are really states of one screen: empty, loading, error, success, or a version for each user role. Twenty screens built from repeating patterns can take less effort than eight novel ones. More screens, more features or more documentation are not automatically better; the aim is the right level of detail for the stage the product is at.
The Factors That Move Design Effort
Beyond project type, these variables raise or lower the effort. The examples are hypothetical.
Scope and MVP boundaries
Every feature brings journeys, screens and states, and exclusions matter as much as inclusions: onboarding, settings, account recovery and admin tools all need designing if they are in scope. An MVP shrinks the feature list, not necessarily the difficulty, because the remaining features carry more weight and unproven assumptions often call for more discovery. In a hypothetical appointment-booking app, letting customers pick a time and receive a confirmation is a focused job; adding staff scheduling, payments and reporting means designing for several kinds of user.
UX research and discovery
Effort tracks uncertainty. Replacing an internal tool your team uses daily needs little research; entering a new market with an audience you have never spoken to needs assumptions tested. Research can be proportionate, such as a few interviews, a review of support requests and a competitor check, but evidence meant for investors or a regulated setting must be sturdier. Skipping research can move the cost into later rework rather than remove it. That is a widely held agency view, Peachr’s guide included, not a measured result. Recruiting participants also takes time and sometimes money, so ask whether it is included and who does it.
The complexity of user journeys
A linear journey is quick to map. Branches, roles, permissions, sensitive decisions such as payments or deleting an account, and failure states multiply the work. A hypothetical “send money” flow looks like three screens on the happy path; add insufficient funds, failed verification and cancelled transfers and it needs many more. Real users hit these cases, yet they rarely appear in a first brief, which is why they are often missing from a low estimate.
Platforms and responsive behaviour
iOS and Android have different navigation and component conventions, so designing for both means either one adaptable design or two platform-specific ones. Web, tablet and responsive layouts add behaviour to specify. How the product will be built influences the choice, so involve whoever will build it.
Prototype fidelity and testing
A rough clickable concept suits early checks on structure; a detailed prototype with realistic content and transitions costs more and earns its place when look and feel affect the result. Testing finds where people hesitate before anything is built. Its cost depends on participants and rounds, and on whether you have budgeted to act on what it finds.
Design systems and future growth
A lightweight system of colours, type styles and core components is usually enough for one small team. A fuller component library with usage rules and accessibility guidance pays off as the product spreads across teams or platforms. Too much too early slows a first release; too little produces inconsistency that is expensive to untangle.
Feedback, timeline and project boundaries
Feedback from one decision-maker is quicker to act on than feedback from five who disagree. Revision rounds, approval routes, waiting for content or brand assets, and compressed deadlines all change the effort, as does scope that grows midway. Agree how change will be handled before work starts.
How to Read a Design Estimate
Read the proposal before the price. A low estimate is not necessarily poor value, but it usually leaves something out, and the useful question is what. Common omissions:
- Research and testing, or the cost of recruiting participants.
- Error, empty and edge-case states, so only the happy path is designed.
- A platform you assumed was covered.
- Revision rounds beyond a minimum, or handoff support during the build.
- A design system, leaving you with inconsistent components.
- VAT. Check whether the figure includes it.
To compare proposals with different scopes, list each deliverable side by side and mark what the cheaper one lacks. Then ask:
- What is included and excluded? Stages, deliverables and platforms.
- How many designer-days does each phase assume, and who will do the work at what seniority?
- How many journeys, screens and states does the price cover?
- How many revision rounds are included, and what triggers extra cost?
- What does handoff include, and will the designer be available during the build?
- What do I own at the end? Design files, assets and components.
- How are scope changes assessed and priced?Price is only one part of the decision, and it helps to know what to look for when choosing an app design agency beyond the quote itself.
Design Cost Is Not the Same as Development Cost
Design produces decisions and specifications: what the product does, how it behaves and how it looks. Development turns them into working software. The skills, effort and pricing logic differ, so a design quote and a build quote should not be read as parts of one number unless they are presented that way.
A design-only engagement ends with deliverables such as a tested prototype and handoff files, which you take to a development team of your choice. In a combined project the disciplines overlap: engineers can flag feasibility early and design can adapt during the build. The trade-off is that one figure can hide how the money is split, so ask for the design scope to be visible on its own.
Keeping the First Phase Focused
Design cost is easier to control when the first phase has a clear job: resolving the biggest uncertainty at the lowest level of detail that can answer it. Five questions help:
- Who is the main user? Start with one primary group.
- What is the core problem? If it cannot be stated in a sentence or two, discovery comes first.
- What is the essential journey? The path where the product proves its value.
- Which assumptions are riskiest? Those are what to validate.
- What can wait? Settings, admin tools, secondary roles, extra integrations and further platforms are common candidates.
A prototype is enough when the aim is to validate an idea, test a concept with real users or show investors a direction. It answers “would people use this?”. More complete design is necessary when the aim is to prepare for development: full flows, states, components and handoff detail, because engineers cannot build reliably from a prototype that glosses over error cases. Aligning stakeholders sits between the two.
So, How Much Should You Budget for App Design in 2026?
With no reliable benchmark, build the budget from the work rather than from an average. A workable approximation is the designer-days each phase needs, multiplied by the day rate, plus out-of-pocket costs such as participant recruitment, plus some contingency for revisions. This is a planning method, not an industry-standard formula.
In practice:
- Decide the outcome of this phase: validation, stakeholder alignment, a tested prototype or readiness for development.
- Give two or three providers the same brief and ask for phase-by-phase estimates.
- Prepare the brief: the problem and users, essential versus later features, key journeys, platforms, existing research or brand material, who approves, your deadline, who will build, and a rough budget if you have one.
- Phase the work. Commit to the first stage and review what it produced before funding the next.
Expect quotes to differ, sometimes by a multiple; the questions in the previous section will usually explain why. A small validation prototype and a research-led MVP are different budgets, and your own brief, not a published range, should decide which one you are planning for
Planning an App Design Project?
If you are planning a new app or improving an existing product, talking it through with Acnoon is most useful at a particular point: when you need to settle what the first phase should cover, define the design scope, or work out which decisions have to be made before development starts. A brief helps, but so does a clear description of the problem. You can read about Acnoon’s App Design service, or get in touch.