Two agencies can quote the same app idea five times apart and both be honest. This breakdown shows where the money goes, what the market publishes, and how costs differ in the UK and India.
"How much does an app cost?" is the question every founder asks first and every agency answers last. The honest reply is a range so wide it sounds evasive. This guide narrows it: what the market actually publishes, where the money goes stage by stage, how costs change between the UK and India, and the handful of decisions that move your quote more than any choice of agency.
How much does app development cost?
App development costs from the low tens of thousands for a focused app that does one job well to several hundred thousand for a platform with many user types, integrations and strict security. Pricing pages we reviewed in October 2026 put typical mobile app projects at $20,000 to $120,000 at a US app company, and £10,000 to £100,000 at a UK agency.
The spread is not padding. An app is a front end people tap, plus a backend that stores data, sends notifications and talks to other systems, plus the testing and store work that gets it onto phones. Two ideas that sound similar on a call can need very different amounts of each.
Published app development cost ranges
Few firms publish numbers, so the ones that do are worth reading side by side. These came from agency pages and cost guides we reviewed in October 2026. Treat them as the spread of the market, not a quote.
| Where the figure came from | Scope described | Range published |
|---|---|---|
| A US mobile app development company | Typical mobile app projects | $20,000 to $120,000 |
| A UK mobile app agency | Simple app with a few features and a single purpose | £15,000 to £25,000 |
| The same UK agency | Moderately complex app with user accounts and custom integrations | £25,000 to £40,000 |
| A large app development firm | Medium-scale app with advanced features and integrations | $100,000 to $250,000 |
| The same firm | Enterprise-grade app with complex architecture and high security | $250,000 to $500,000 |
Read down the third column and the jumps line up with scope, not technology. Accounts, integrations and security requirements are what turn a £20,000 app into a £40,000 one, and a mid-size build into an enterprise one.
App development cost breakdown by stage
Every app goes through the same stages, whoever builds it. What changes is how long each one takes. This is where the hours go, and what makes each stage grow.
| Stage | What you get | What makes it cost more |
|---|---|---|
| Discovery and scope | User journeys, a feature list, what waits for version two | Several user types, unclear rules, a large back office |
| UX and interface design | Wireframes, then designs for every screen and state | Custom animation, a new brand, separate iOS and Android patterns |
| App front end | The screens, navigation and device features on the phone | Offline use, camera and maps, Bluetooth or other hardware |
| Backend, API and admin | Accounts, database, notifications and an admin panel | Real-time chat or tracking, complex permissions, reporting |
| Integrations | Payments, maps, email, SMS, your CRM or ERP | Each extra system, especially ones with poor documentation |
| Testing and QA | Checks on real devices, OS versions and edge cases | Money, health data, older phones, many languages |
| Store launch | Listings, screenshots, review responses, release pipeline | Rejections that need changes, regulated categories |
The row people forget is the backend. A customer-facing app with a separate admin dashboard is effectively two products, and the dashboard can take as long as the app. One London agency we reviewed priced discovery and design as separate phases, each at £3,000 to £10,000, before any build work began. That is a sensible way to buy: pay for the plan, then decide.
What factors increase mobile app development costs the most?
Six decisions set most of the price. They are product decisions, so most of them are yours, and a good mobile app development company will walk through each one before it quotes.
| Decision | Cheaper end | Expensive end |
|---|---|---|
| Platforms | One cross-platform codebase for iOS and Android | Two separate native apps, plus a web version |
| User types | One kind of user | Customers, providers and staff, each with their own screens |
| Live features | Content that refreshes when you pull down | Chat, live tracking or bookings that sync in real time |
| Offline use | Needs a connection | Works without signal and syncs changes later |
| Data rules | Ordinary personal data | Health, financial or children's data with extra compliance work |
| Design | A clean system built from standard components | Bespoke motion and illustrations on every screen |
Any row on the right can be the right call. The question is whether it needs to be in the first release. Usually at least two of them can wait, and that is where real savings come from, not from a lower day rate.
Why do app development companies charge so differently for the same app idea?
Because they are rarely quoting the same thing. Line competing quotes up side by side and the gap usually comes from one of these:
- One quote covers the app only. Another includes the backend, admin panel and hosting setup.
- One prices the first release. Another prices everything you mentioned on the call.
- Fixed-price quotes carry a margin for risk. Hourly quotes move that risk onto you.
- Design, testing on real devices and store submission are included, partly included or missing.
- Seniority and location. A senior team in one country and a junior team in another will price the same hours very differently.
The fix is simple and slightly tedious: write one feature list, send it to everyone, and ask each firm to mark what is in and out. The totals start to make sense once the scope is the same.
Native, cross-platform or web app: the biggest cost decision
Building separate native apps in Swift and Kotlin means two codebases, two sets of tests and features that can drift apart. A cross-platform framework writes most of the app once for both stores. For most business and consumer apps, users cannot tell the difference, which is why we often suggest React Native app development when an app needs both stores at launch, and Flutter when the interface must look identical everywhere. If you are weighing frameworks, our Flutter vs React Native comparison sets out the trade-offs.
Sometimes the cheapest app is not a store app at all. An installable web app works on phones and desktops, updates instantly and needs no review. DigiSafe, our own encrypted document vault, is built that way: one Next.js app that installs on Android, iPhone and desktop, with a document scanner and offline access.
How much does it cost to hire an app developer by the hour?
Hourly rates vary more by region and seniority than by framework. A US app agency's cost guide we reviewed in October 2026 put the US average at around $88 an hour and noted that US-based agencies often charge $250 or more. Offshore teams charge less, but their rates swing so widely with seniority that a single figure would mislead you more than it helps.
Rates are the least useful number on a proposal. An experienced developer who has shipped apps to both stores finishes the same feature in far fewer hours, and avoids the architecture mistakes that cost more to undo than to prevent. Compare totals for one defined scope, which is also how any app development company worth hiring should quote you.
App development cost in India
India attracts app work from the UK, US and Australia because rates are lower, and Indian businesses commission apps for a home market that has its own demands. The market runs from solo freelancers to firms with thousands of engineers, so quotes inside India vary more than almost anywhere. We have not found published rupee ranges reliable enough to repeat here, so judge an Indian quote the same way as any other: by scope, seniority and what is included.
For apps aimed at Indian users, these are the things that add real work to mobile app development cost in India:
- UPI and wallet payments through a gateway such as Razorpay, alongside cards.
- Sign-in by mobile number and one-time password rather than email.
- Several languages, including scripts that need careful layout and testing.
- Mid-range Android phones and patchy networks, which push for a smaller app and offline handling.
- Android first. Many Indian consumer apps launch on Android and add iOS later.
If you are a business abroad thinking about building in India, the questions that decide whether it saves money are about people and ownership, not price. Our guide to outsourcing web development to India covers them, and they apply to apps in the same way.
App development cost in the UK
UK agencies are among the few that publish prices. One UK mobile app agency we reviewed in October 2026 put its projects at £10,000 to £100,000, with simple single-purpose apps at £15,000 to £25,000, moderately complex apps with accounts and integrations at £25,000 to £40,000, and enterprise apps from £40,000 upwards. A London agency priced a focused MVP build at £15,000 to £50,000 and ongoing support retainers at £1,000 to £5,000 a month.
Many UK businesses now split the work: strategy and sign-off stay in-house, while design and build go to a remote team with overlap planned around the UK working day. That works when you own the code, the developer accounts and the backlog from the first day, and get a test build on your own phone every week.
What does an app cost to run after launch?
The build is a one-off. These costs keep arriving once the app is live:
| Running cost | What it covers | Notes |
|---|---|---|
| Apple Developer Program | Publishing on the App Store | 99 USD per membership year on Apple's enrolment page, October 2026 |
| Google Play developer account | Publishing on Google Play | A one-time US$25 registration fee, per Google's Play Console help |
| Backend hosting | API, database, file storage and background jobs | Grows with users and data, not with the number of screens |
| Third-party services | Push notifications, SMS, email, maps, analytics | Most have free tiers for low volume and charge per use after |
| OS and framework updates | New iOS and Android versions every year, library upgrades | Skipping them is how apps start crashing or get pulled from stores |
| Fixes and small features | The changes real users ask for | Usually a monthly retainer or a block of hours |
Store fees are trivial next to the rest. Plan a running budget for hosting, services and developer time from the start, and check Apple's enrolment page for the fee in your local currency.
How can I plan my mobile app budget smartly?
- Pay for discovery first. A written scope and clickable prototype are the cheapest place to change your mind.
- Launch one journey well. The full vision can follow once real users show you what matters.
- Choose cross-platform unless the app depends on deep platform-specific features.
- Ask for a fixed price on the written scope, paid against milestones you can test.
- Keep a share of the budget back for the weeks after launch, when most change requests arrive.
- Own the code, the developer accounts and the cloud services from day one.
If your first version is really a test of the idea, read our guide to MVP development cost and timeline, or see how our MVP development services scope a first release before quoting it.
Want a fixed quote for your app?
Send us a short description of the app, who uses it and what it needs to connect to. We reply within one business day with questions, then a fixed price on a written scope, with milestones you can test on your own phone. Read how our app development services work, or start a project and pick a budget range so the first conversation starts in the right place.
FAQ
Frequently asked questions
Publishing itself is cheap. Apple's enrolment page listed the Apple Developer Program at 99 USD per membership year in October 2026, with local prices shown during sign-up. The real cost is building the app: design, development, a backend if it stores data, testing on real devices and preparing the store listing. Apps that sell digital content inside the app also pay Apple a commission on those sales, which belongs in your business plan.
In cash, very little: a computer, the store developer fees and some free-tier services. In time, a great deal. A non-developer building a real app should expect months of learning before shipping something reliable, and no-code tools trade speed for limits on custom logic and data. Building it yourself makes sense for testing an idea. For an app customers will pay for or trust with their data, most founders hire help.
Neither platform is cheap to support alone if your customers use both. A single native app on one platform costs roughly the same either way, though Android usually needs testing on a wider range of devices. The cheaper route to both stores is one cross-platform codebase in React Native or Flutter, which shares most of the work. Pick a single platform only if nearly all your users are on it.
A focused first version usually takes around two to four months from agreed scope to store approval. Separate user roles, an admin panel, real-time features or several integrations push it longer. Store review adds a few days at launch that nobody fully controls. Large apps are best released in stages, so something useful reaches users early while the rest is built behind it.
Cut scope before you cut rates. Build one journey for one type of user, on one cross-platform codebase, with off-the-shelf services for sign-in, payments and notifications. Consider an installable web app if the idea does not depend on store presence or deep phone features. Avoid the cheapest quote that leaves out the backend, testing or store work, because those costs come back as change requests.
Because most of what an app does happens there. Accounts, permissions, data storage, notifications, payments, admin tools and connections to other systems all live on the server. The phone shows the result. A simple content app needs little backend work, while a marketplace or booking app may need as much backend effort as front end. Ask every quote to price the backend as its own line.
A fixed price suits a first release with a written scope, because you know the cost and milestones before work starts. Hourly or a monthly retainer suits ongoing work after launch, where priorities change week to week. A dedicated developer suits a product team that needs steady capacity. Many apps start fixed, then move to a retainer once real users begin asking for changes.
Written by
Kavion Solutions Team
The senior team behind Kavion Solutions. We build websites, apps, AI tools and cloud setups, and run the SEO and ads that bring in customers, so everything here comes from work we have actually shipped.
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