What Does a Mobile App Actually Cost in 2026?

It’s the first question almost every founder asks, and the one most agencies dodge with “it depends”. It does depend — but not so much that you can’t get a meaningful answer. After two decades of quoting mobile apps, the ranges have settled into reasonably predictable bands. Here’s what an app actually costs in 2026, what the money buys you and where the bargain-basement promises tend to fall apart.

The Honest Ranges

For a custom-built native or cross-platform app delivered by a credible team in the UK or Europe, today’s figures look roughly like this:

• £15,000 – £30,000 — A focused MVP. One platform, one user role, three to five core screens, basic auth, no real-time features. Useful for testing an idea, raising a seed round or replacing a spreadsheet workflow internally.
• £40,000 – £90,000 — A production-grade app for both iOS and Android. Multiple user roles, integrations with a backend or third-party APIs, push notifications, analytics, app-store launch support. This is where most small-business projects land.
• £120,000 – £350,000+ — Enterprise or regulated work. Real-time data, offline sync, complex integrations (ERPs, payment processors, hardware), accessibility audits, penetration testing, multi-region deployment.

Anything quoted significantly below the bottom of these bands usually means one of three things: the team is junior, the scope has been quietly cut, or the bill catches up to you in change requests after signing.

What Actually Drives the Number Up

Most people assume “more screens” is the cost driver. It isn’t. The real escalators are:

1. Real-time features

Anything live — chat, location tracking, collaborative editing, multiplayer — adds a whole infrastructure layer (sockets, message brokers, presence). It’s not a “screen”, but it can double a backend budget.

2. Integrations with systems you don’t control

A clean third-party API with good docs is cheap. A legacy SOAP service, an internal ERP with no test environment, or a partner who’s “still drafting the spec” can quietly burn weeks. Always quote integrations separately and conservatively.

3. Compliance and security

GDPR is the floor. Add HIPAA, PCI-DSS, ISO 27001, accessibility (WCAG 2.2 AA) or anything sector-specific and the cost of doing the work properly — audits, documentation, secure hosting — adds 15–30%.

4. Design fidelity

A well-designed app with custom illustration, motion and a polished interaction layer takes 2–3x the design budget of a “Material-defaults” build. Worth it for consumer brands; overkill for an internal tool.

5. App Store hygiene

Submitting to Apple and Google takes longer than people expect. Apple’s review can reject for things you didn’t think to plan for — privacy manifests, sign-in requirements, payment rules. Budget for at least two rounds.

Where the “£5,000 App” Promise Breaks Down

You’ll see them advertised — usually built on a low-code template, white-labelled, with a generic backend the agency owns. They work, briefly, for very simple use cases. The problems show up later:

• You don’t own the code or the data.
• You can’t extend it when your idea evolves.
• The agency disappears or the platform pivots, and migration costs more than the original build would have.
• App Store updates break it and there’s no one to fix it.

For a hobby project, that’s fine. For anything you plan to grow into a business, you’re paying twice — once to build the throwaway, again to build the real one.

Hidden Costs Worth Budgeting For

Even a well-quoted project has running costs people forget:

• Hosting & infrastructure: £30–£500/month depending on traffic.
• Apple Developer Program: $99/year. Google Play: $25 one-off.
• Third-party services: push notifications, analytics, error monitoring, transactional email — typically £50–£300/month combined.
• Ongoing maintenance: budget 15–20% of the original build cost per year for OS updates, security patches and small improvements.

How to Read a Quote

A quote that doesn’t break down what’s included is a red flag. A useful quote separates:

• Discovery and design
• Development (broken down by platform or major feature)
• Integrations (named and scoped individually)
• Testing and QA
• App-store submission
• Post-launch support window

If two quotes for “the same app” are wildly different, the cheaper one is usually leaving things out — not pricing more efficiently.

A Final Word

The cost of an app isn’t really the question. The question is whether the thing you build returns more than it costs — through revenue, efficiency, retention or strategic positioning. A £60,000 build that saves your team 20 hours a week pays itself back inside a year. A £5,000 build that doesn’t quite work pays nothing back at all.

If you’re in the early stages of scoping, the most valuable conversation you can have isn’t with a sales rep — it’s with someone who’ll walk you through which of these cost drivers actually apply to your idea, and which you can defer. We’re always happy to have that conversation, with no expectation of where it leads.