How much does a UK app developer cost in 2026?

The single most common question we get on a first call: how much does an app cost?And the single most useless answer in our industry: "anywhere from £10,000 to £250,000."That range covers roughly nothing.

This guide gives you a much sharper number — broken down by what you actually need, which decisions move the price the most, and the three mistakes that quietly double every quote.

Why pricing ranges are so wide

The wide range exists because the word "app" gets used for everything from a five-page WordPress site to a multi-tenant SaaS with iOS + Android clients and a Stripe billing layer. The same three words, "build me an app," can mean a £4,000 weekend job or a £180,000 multi-quarter engagement.

The four things that move the price most:

1. Platforms. One platform is one unit of work. Two (e.g. iOS + Android) is roughly 1.5×. Three (iOS + Android + web admin) is roughly 2×. Native vs cross-platform changes this materially.
2. User roles. A single-user-type app (customers only) is cheap. A two-sided marketplace with separate flows is 2–3× the work. Add an admin panel and you're at 3–4×.
3. Payments and subscriptions. Stripe Checkout for one-off payments is a day's work. A full subscription system with paywall gating, proration, upgrades, dunning and revenue analytics is 3–5 weeks.
4. Compliance. Standard UK GDPR is included in any decent build. SOC 2, ISO 27001, NHS DSPT or HIPAA add tens of thousands of pounds. Many founders forget to ask, then find out at month nine.

Agency vs freelancer vs studio

Three very different supplier shapes, three very different bills.

Freelancer (£300 – £900 / day)

One person. Cheapest hourly rate, fastest start, friendliest to talk to. The risk: they get sick, take another contract, or simply don't know the bit your project needs (a freelancer specialist in React Native is rarely also great at Stripe webhooks and security headers). For a 6-week sprint, often the right answer. For a 6-month build, you're betting the project on one person's calendar.

UK design + dev agency (£900 – £2,400 / day)

Multiple people, formal process, slide-deck pitches, longer timelines. Quality varies wildly. The good ones produce world-class work; the bad ones bill £80k for a website you could've had for £8k, and you'll never quite know which one you got until launch. Most charge by retainer with rate-card pricing, not fixed scopes.

Studio / boutique (£550 – £1,400 / day)

Two to five people, founder-led, often more technical than agencies and more reliable than freelancers. Usually quote fixed prices on fixed scopes. The middle ground most UK SMEs end up wanting and not knowing the name for. (BozApps is one of these.)

Off-shore (£100 – £400 / day)

Lower hourly cost, higher hidden cost. The technical work itself is often fine — what fails is the bit nobody quotes: requirements clarification, design judgement calls, GDPR review, App Store submissions. You'll likely end up paying a UK supplier to fix the £15,000 build six months later. Sometimes the right answer; usually not for a v1.

The three mistakes that double every quote

1. Scope creep dressed up as "small additions." Each "could we just also add..." adds 5–15% to the build. By month three the build is 40% larger than the proposal. Fix: agree changes in writing, with a cost and a date delta, every time.
2. Discovery skipped. Most projects that overrun started with a one-paragraph brief and a vague Figma. A two-week discovery phase, done properly, saves you the equivalent of months later. It feels expensive at the time. It isn't.
3. "We'll just use [no-code tool] for the v1." No-code tools have their place. The mistake is using them for the v1 of a product whose v2 needs to be real software. You end up paying for the v1, then paying again for the rebuild. Pick the right tool for the version you're actually shipping.

What you should actually ask in a first call

Not "how much will it cost?" — they can't answer in a useful way until they know more. Ask:

• What does your typical first deliverable look like? A written proposal? A design? Working code? The answer says a lot about how they work.
• Can you give me a fixed price after discovery? A reluctance to ever commit to a fixed price is a yellow flag.
• Who specifically is writing the code? Same person you're talking to? Subcontractor? Junior?
• What happens at the end? Do I own the code? Are credentials handed over? Is there a maintenance retainer?
• Have you shipped something like this before? Ask for the specific live URL. Click around it.

What BozApps charges

For full transparency: BozApps is a studio. Daily rate is roughly £900–£1,100 depending on the project shape. We almost always quote a fixed price per phase rather than billing by day, because most clients want to know the number before they sign. Our typical engagements:

• Marketing site: from £2,000, 2–3 weeks
• SaaS platform v1: from £25,000, 10–14 weeks
• Mobile app v1 (Android): from £18,000, 8–12 weeks
• Geospatial dashboard: from £8,000, 3–6 weeks
• Hosting & operations: from £350 / month

These are honest numbers. They're not the cheapest in the UK and they're not the most expensive. They're what production-quality work costs from a small studio that's going to be around to maintain it.

What does "production-quality" even mean?

It's a phrase software people throw around. Here's what we actually mean by it:

• TypeScript strict (or its equivalent — runtime types validated at boundaries)
• Row-level security on the database (not "we check it in the app code")
• Sentry or equivalent error tracking from day one
• Daily database backups with a quarterly verified restore
• Lighthouse score 95+ on the public pages, AA accessibility minimum
• schema.org structured data, sitemap.xml, robots.txt, OG images
• Stripe webhooks reconciled (not just listened to)
• GDPR-compliant cookie + privacy handling, with a real privacy policy
• A README the next developer could pick up in an hour

None of these add up to much individually. Together, they're the difference between a v1 that lasts five years and a v1 that needs rebuilding inside six months.