Quick answer: A basic app (1–2 core features) costs £10,000–£30,000 and takes 8–12 weeks. A medium app costs £30,000–£80,000 and takes 4–6 months. A complex, custom-built app costs £80,000–£150,000+ and can take up to 18 months. Outsourcing to a trusted Indian development team cuts these figures by 60–70%.
This is a straight breakdown with real numbers — no fluff. We cover app cost by complexity, what drives the price up, a comparison between UK agency rates and offshore development, and how to plan your budget before you speak to any developer.
If you are a startup founder or business owner in the UK, France, or the US thinking about building your first app, this guide gives you the numbers you need to make a confident decision.
The biggest driver of cost is complexity — specifically, how many features your app needs, which platforms it runs on, and how custom the design is. Here is a practical breakdown:
| App Type | Example | Cost (UK Agency) | Cost (India Team) | Timeline |
|---|---|---|---|---|
| Simple / MVP | Booking app, basic loyalty card, single-feature tool | £10,000 – £30,000 | £4,000 – £10,000 | 8–12 weeks |
| Medium Complexity | E-commerce app, delivery app, social platform | £30,000 – £80,000 | £12,000 – £28,000 | 4–6 months |
| High Complexity | Fintech, healthcare, multi-vendor marketplace | £80,000 – £150,000+ | £28,000 – £55,000 | 9–18 months |
| Enterprise / Custom | Full ERP integration, AI-powered platform | £150,000+ | £55,000+ | 12–24 months |
* India team rates assume a senior development team with UK-standard quality, verified via Clutch reviews. Rates current as of 2026.
Two apps can look identical on the surface and cost three times as much as each other. Here are the factors that move the price the most:
iOS only or Android only cuts costs by 35–40% vs building for both. Cross-platform frameworks like Flutter or React Native build both from one codebase, saving 30–40% vs two native apps.
Each feature — user login, push notifications, payment integration, maps, real-time chat — adds development time. A payment gateway alone (Stripe setup) adds £2,000–£6,000 to a project.
A fully custom design with animations and micro-interactions costs 40–60% more than using a standard component library. For most MVPs, custom design is not necessary at launch.
Connecting to APIs — Stripe, Google Maps, Twilio, Shopify, CRM systems — each adds time. Budget £1,500–£5,000 per integration depending on complexity.
User data storage, real-time sync, admin dashboards, and server setup are often underestimated. Backend work can represent 40–60% of total project cost on complex apps.
Developer location has the biggest single impact on price. A UK senior developer costs £80–£150/hr. The same seniority in India costs £15–£35/hr, with comparable output quality.
Hourly rate is the most direct cost lever. Below is a comparison across major development regions for senior mobile app developers in 2026:
| Location | Avg. Hourly Rate | 500-hr project cost | Quality Level | Time Zone (vs UK) |
|---|---|---|---|---|
| UK Agency | £100–£150 | £50,000–£75,000 | High | Same |
| France / Spain | £40–£60 | £20,000–£30,000 | High | +1 hr |
| Eastern Europe | £30–£55 | £15,000–£27,500 | High | +1–3 hrs |
| India (verified) | £15–£35 | £7,500–£17,500 | High | +5.5 hrs |
| Low-cost freelancers | £5–£12 | £2,500–£6,000 | Variable | Varies |
The +5.5 hour difference with India is actually a workflow advantage for UK businesses: you brief your team at the end of your day, and they deliver progress by your next morning.
Here is a real-world cost breakdown for a recent project we completed for a London restaurant group with 6 locations. This was an iOS + Android loyalty and ordering app.
| Development Phase | What Was Built | Hours | Cost (India team) |
|---|---|---|---|
| Discovery & Planning | User stories, wireframes, technical spec | 40 hrs | £1,200 |
| UI/UX Design | Full design system, 22 screens | 80 hrs | £2,400 |
| Frontend (Flutter) | iOS + Android from one codebase | 200 hrs | £6,000 |
| Backend (Node.js) | API, database, admin dashboard | 160 hrs | £4,800 |
| Integrations | Stripe payments, loyalty points engine | 60 hrs | £1,800 |
| Testing & QA | Manual + automated testing, bug fixes | 60 hrs | £1,800 |
| Launch & Support | App Store submission, 30-day support | 20 hrs | £600 |
| Total | Full iOS + Android loyalty app | 620 hrs | £18,600 |
The equivalent quote from a London agency for this same scope was £58,000. The project took 14 weeks from kickoff to App Store approval.
We follow a structured process on every project, whether the budget is £10,000 or £100,000. This is how we work:
We map your requirements, define features, and set a realistic scope and timeline. 1–2 weeks.
Wireframes, user flows, and full UI design in Figma. You approve before any code is written. 2–3 weeks.
Weekly sprints with a working build shared every Friday. You see progress, not just updates. 6–18 weeks.
Manual QA across real devices plus automated testing. No app ships without passing our checklist. 2–4 weeks.
App Store and Google Play submission, server setup, and monitoring. We handle all the technical publishing. 1–2 weeks.
30-day post-launch support included. Monthly maintenance plans available from £500/month. Ongoing.
| Challenge | What Usually Goes Wrong | Our Approach |
|---|---|---|
| Scope creep | New features added mid-build inflate the budget | Locked discovery document with a change-request process for anything added after sign-off |
| Communication delays | Time zone gaps slow down decisions and reviews | Dedicated UK-hours overlap window (9am–1pm GMT) + Slack for async updates |
| IP and code ownership | No clear contract on who owns the source code | All source code is transferred to the client on final payment — documented in the contract |
| Budget overruns | Vague quotes lead to surprise invoices | Fixed-price quotes for defined scopes; milestone payments only after delivery |
| Post-launch bugs | Developer disappears after launch | 30-day free support included + optional monthly retainer |
We are a development team based in India, working exclusively with clients in English-speaking and Western European markets. Here is what makes the working relationship effective:
You brief us at your end of day. We build overnight. You wake up to progress.
You know the total before work begins. No surprise invoices at the end of a sprint.
We sign an NDA before any discussion. Full source code handover is in every contract.
Real reviews from real clients — not testimonials we wrote ourselves.
We build with EU data regulations in mind from the start, not as an afterthought.
Every project has a dedicated project manager who responds within 4 business hours.
These are the questions we get most often from UK, French, and US business owners before they start a project.
Tell us about your project and we'll get back to you within 4 hours.