“How much will our app cost?” is usually the first question a UK founder or product owner asks, and the most honest answer is “it depends” — which is not very helpful when you are preparing a board paper or an Innovate UK application. This article tries to do better. We break mobile app budgets into the components that actually drive cost, show indicative ranges in pounds sterling, and compare three ways UK organisations commonly resource a build: a fully onshore UK team, an offshore delivery team, and a hybrid model that combines UK-based product leadership with offshore engineering.
Creensight UK is the London office of Creensight Private Limited, an IT company headquartered in Ahmedabad, India, so we work in the hybrid model every day. We will be candid about where it works well and where an onshore team may suit you better.
Key takeaways
- Scope, not location, is the biggest cost driver: the number of user journeys, integrations and platforms matters most.
- A focused minimum viable product (MVP) is usually the most cost-effective way to test demand before investing in a full product.
- Offshore and hybrid teams can reduce day-rate costs significantly, but only with clear specifications, overlapping hours and strong product ownership.
- Budget for the full lifecycle — design, QA, store release, hosting, analytics and maintenance — not just development.
- For apps handling personal data, UK GDPR obligations apply regardless of where the developers sit.
What actually drives the cost of a mobile app
Two apps that look similar in a pitch deck can differ in cost by a factor of five. The difference usually lies in the parts users never see.
The main cost drivers
- Number of screens and user journeys: sign-up, onboarding, browsing, purchasing, account management and support each add design, build and testing time.
- Platforms: iOS only, Android only, or both — and whether you also need a web app or admin dashboard.
- Back end and integrations: payments through Stripe or GoCardless, open banking APIs, CRMs, booking engines, NHS or local authority systems, and any legacy databases.
- Real-time and offline features: chat, live tracking, push notifications and offline sync are disproportionately complex.
- Security and compliance: authentication, encryption, audit logging and data-protection work grow with the sensitivity of the data.
- Design ambition: a clean, system-standard interface is far cheaper than bespoke animation and illustration.
Indicative budgets in pounds sterling
The figures below are typical ranges we see for UK projects. They are planning guides, not quotes; a discovery phase is the only reliable way to price a specific idea.
| App type | Typical scope | Onshore UK team | Hybrid UK + offshore |
|---|---|---|---|
| Simple MVP | 8–12 screens, login, one core journey, basic admin | £40,000–£80,000 | £15,000–£35,000 |
| Mid-complexity product | Payments, notifications, integrations, analytics | £80,000–£180,000 | £35,000–£90,000 |
| Complex platform | Marketplace, real-time features, multiple user roles | £180,000–£400,000+ | £90,000–£220,000+ |
| Ongoing maintenance | OS updates, fixes, small improvements | 15–25% of build per year | 15–25% of build per year |
These ranges assume a cross-platform build with React Native or Flutter. Fully native apps for both iOS and Android typically cost more because much of the work is done twice.
Onshore, offshore or hybrid: comparing the models
Fully onshore UK team
A London, Manchester or Edinburgh agency offers face-to-face workshops, the same time zone and deep familiarity with UK sectors. Day rates for experienced mobile developers in the UK are commonly several hundred pounds, and senior specialists cost more. That premium buys convenience and proximity, which can be worth it for highly regulated or very ambiguous projects.
Fully offshore team
Working directly with an overseas supplier usually offers the lowest day rates. The risks are communication gaps, unclear accountability and time-zone friction, especially if the UK side lacks someone who can write clear requirements and review work critically.
Hybrid model
In a hybrid engagement, UK-based leadership handles discovery, product decisions and stakeholder communication, while an experienced offshore team builds and tests. India’s time zone overlaps with the UK morning and early afternoon, which leaves room for daily stand-ups and same-day answers. This is how Creensight UK works: our London office is backed by the engineering team of Creensight Private Limited in India.
Which model suits you?
An onshore team often makes sense when the problem is still fuzzy, stakeholders need frequent in-person workshops, or procurement rules require UK-based delivery. A hybrid model tends to suit organisations with a clear product owner, a defined MVP and a desire to stretch a fixed budget further. Fully offshore arrangements work best for teams that already have strong internal technical leadership and can manage a supplier directly. Many organisations move between models over time — for example, running discovery onshore and then scaling development with a hybrid team once the roadmap is stable. Whatever you choose, agree how decisions are made, how progress is reported and who signs off each release.
Cheaper day rates only save money when requirements are clear and someone owns the product. Without that, any team — onshore or offshore — will build the wrong thing efficiently.
Native or cross-platform?
For most UK business apps — booking, ordering, account management, field-service and membership apps — cross-platform frameworks are now the sensible default. React Native and Flutter let one team ship to both stores, share most of the code and keep maintenance costs lower.
When native still wins
- Graphics-heavy apps such as games or advanced AR experiences.
- Deep hardware integration, for example specialist Bluetooth devices or medical peripherals.
- Products where every millisecond of performance is part of the value proposition.
Our mobile app development team will recommend the approach that fits your users and roadmap rather than a favourite technology.
An illustrative example: budgeting a booking app
To make the ranges more concrete, imagine a hypothetical group of physiotherapy clinics in the Midlands that wants patients to book, reschedule and pay for appointments from their phones. This is an illustration of how we think about scope, not a real client project.
What the MVP would include
- Patient sign-up and login with email verification.
- Clinic and practitioner search with live availability pulled from the existing practice-management system.
- Booking, rescheduling and cancellation with reminder notifications.
- Card payments and deposits through an established payment provider.
- A simple web dashboard for reception staff.
What would wait for version two
- Video consultations and in-app chat.
- Exercise programmes with progress tracking.
- Loyalty schemes and referral rewards.
Built cross-platform, that first release would typically sit in the “simple MVP” to lower “mid-complexity” band in the table above. The integration with the practice-management system is the biggest unknown: if the vendor offers a well-documented API, the estimate stays modest; if data has to be synchronised through exports or screen-scraping, cost and risk rise sharply. A discovery phase would test that integration first, before design work begins, because it shapes everything else. Health-related data would also call for careful data protection work, including a data protection impact assessment and clear retention rules.
The lesson generalises well beyond healthcare. In most UK projects we review, the expensive surprises come from integrations, data migration and unclear decision-making rather than from the screens users see. Identifying those risks early, and pricing them openly, is what keeps a budget credible.
Hidden costs UK teams often forget
- Developer accounts: an annual Apple Developer Program membership and a one-off Google Play registration fee.
- Hosting and back-end services: cloud hosting, databases, file storage and notification services, ideally in a UK or EU region if your users expect it.
- Third-party APIs: SMS verification, mapping, address lookup and identity verification are often charged per use.
- VAT: remember to account for VAT on supplier invoices where it applies; pricing conversations often start excluding it.
- Accessibility and testing devices: testing on a realistic range of iPhones and Android handsets, including assistive technologies.
- Data protection work: privacy notices, data-processing agreements with suppliers and, for higher-risk processing, a data protection impact assessment under UK GDPR.
Tip: ask every supplier to price the first twelve months after launch as well as the build. A realistic support plan is a sign of a supplier who expects to stand behind their work.
How to keep your budget under control
- Run a short discovery phase. Two to three weeks of workshops, user journeys and a clickable prototype usually saves far more than it costs.
- Define the MVP ruthlessly. List every feature, then remove anything that is not needed to prove the core value to your first users.
- Use proven services. Authentication, payments and analytics are solved problems; build only what differentiates you.
- Insist on regular demos. Seeing working software every week or fortnight exposes misunderstandings early.
- Agree ownership of code and accounts. Your organisation should own the source code repository, app store listings and cloud accounts.
If you prefer a fixed scope to start with, our service packages include a mobile MVP option with clearly defined deliverables.
Choosing a supplier: questions worth asking
- Who exactly will work on our project, and can we speak to them before we sign?
- How many hours overlap with UK working time, and who is our day-to-day contact?
- How do you handle changes in scope, and how are they priced?
- What testing do you do, and on which devices?
- How do you manage personal data, access control and security during development?
- What does support look like after launch, and what does it cost?
Clear answers to these questions matter more than the lowest headline price. You will find more about how our engagements work in our FAQ.
Frequently asked questions
How long does it take to build an MVP?
A focused MVP typically takes around ten to sixteen weeks from discovery to store release, depending on integrations and how quickly decisions are made on the client side.
Is offshore development safe for apps handling personal data?
It can be, with the right safeguards: data-processing agreements, appropriate transfer mechanisms under UK GDPR, least-privilege access, anonymised test data and secure development practices. Your organisation remains responsible as controller, so ask suppliers how they meet these requirements.
Can we start with one platform?
Yes. Some UK start-ups launch on iOS or Android first to validate demand. With a cross-platform framework, adding the second platform later is usually much cheaper than starting from scratch.
Who owns the app once it is built?
You should. Make sure your contract transfers intellectual property in the custom code to you on payment and that store listings and cloud accounts are registered in your organisation’s name.
Get an indicative quote for your app
A good estimate starts with a good conversation. It helps if you can share who your first users are, which systems the app must connect to, any deadlines tied to funding rounds or seasonal demand, and whether you already have designs or a prototype. Even a rough sketch on paper is useful. Tell us what your app needs to do, who will use it and when you would like to launch. We will reply with questions, a suggested scope for an MVP and an indicative budget in pounds — with no obligation. Contact Creensight UK to start the conversation.