Why Is It So Expensive to Develop an App?
An app is expensive because it's effectively at least three systems to build and maintain: an iOS app, an Android app, and a backend that stores data and drives the logic. About 80 percent of the work is invisible in the interface – security, error handling, data storage, and testing. You're paying for a working system, not for the screens.
An app looks small: a few screens, a few buttons. Yet even simple apps cost hundreds of thousands of kronor. The explanation isn’t that agencies charge outrageous rates – it’s that an app is more system than what’s visible, and most of the work sits below the surface. Here’s why, and what you can actually do about the price.
An app is at least three systems
What’s casually called “an app” is in practice at least three products that get built, tested, and maintained:
- The iOS app – with Apple’s design language, rules, and annual OS updates.
- The Android app – with its own interface conventions and a considerably more scattered range of devices to work on.
- Backend – the server side that stores data, manages accounts, sends notifications, and talks to other systems. It’s never visible, but without it, the app is a shell.
Cross-platform technology like React Native lets the iOS and Android apps share most of the code, which dampens the cost significantly – but backend, platform testing, and store processes remain regardless. Three systems also mean three things that need to be kept in sync with every change, which is why even “a small change” is rarely small.
80 percent of the work is invisible
The screens you tap are the tip of the iceberg. Roughly 80 percent of the work in an app project goes into things that never show up in the interface:
- Security: encryption, permissions, protecting personal data, GDPR.
- Error handling: what happens when the network drops, the server doesn’t respond, or the user does something unexpected. The happy path is quick to build – every unhappy one takes time.
- Data storage: structures that handle today’s features and survive tomorrow’s.
- Testing: across different devices, OS versions, screen sizes, and network conditions.
- Integrations: every connection to payments, BankID, or business systems is its own small project.
This is the same difference as between a trade show booth and a house: both have walls, but only one of them has to stand for ten years, stay watertight, and pass inspection.
App, website, or web app – the comparison
| Type | Typical cost | Complexity |
|---|---|---|
| Website | SEK 50,000–300,000 | One system, displays content, no accounts or app stores |
| Web app | SEK 300,000–1,500,000 | One to two systems, login and logic, but a single codebase in the browser |
| Mobile app | SEK 250,000–5,000,000 | Three systems, two app stores, device diversity, offline, and notifications |
The comparison explains the price difference better than any quote: it’s not the same thing being built. It also shows why the question “can’t we just start with a web app?” is entirely reasonable – sometimes the answer is yes.
A scenario: same idea, three price tags
Say you want to let customers book appointments with you. As a booking page on the web: maybe SEK 150,000. As a web app with accounts, history, and payment: SEK 400,000–700,000. As a mobile app for iOS and Android with push reminders and BankID: SEK 700,000–1,200,000. The “book an appointment” feature is the same – what changes is the number of systems, integrations, and platform requirements around it. Which level is right depends on how often customers book and how much the reminders are worth to you.
What you can influence
The price isn’t a law of nature. Four levers make a real difference:
- Trim the scope. Fewer flows in version one is by far the biggest saving.
- Choose cross-platform when the app doesn’t demand the absolute most from the platforms.
- Use ready-made building blocks for login, payment, and analytics instead of custom builds.
- Come with clear requirements. Ambiguity always gets paid for in hours – a short discovery phase is cheaper than changing your mind mid-build.
The fifth lever is softer but real: be a fast decision-maker. Projects where decisions get made within days instead of weeks burn fewer hours on waiting, rework, and meeting cycles. Used well, these choices can cut a final bill in half without the product feeling cheap. You can read more about how AI-assisted development changes the math on our AI page – and if you want to know what your idea should cost, get in touch and we’ll go through it.
Frequently asked questions
Why not build for just one platform?
That's often a smart way to lower the cost, especially for a first version. You cut the store work and part of the testing in half. The downside is that you shut out half the market – in Sweden, both iOS and Android are big – so the choice should be driven by where your target audience actually is.
Does cross-platform development make the app cheaper?
Yes, usually. With a framework like React Native, most of the code is shared between iOS and Android, which lowers both development and maintenance costs compared to two native apps. Backend, testing on both platforms, and store work remain regardless of the technology choice, though.
Is a web app a cheaper alternative?
Often, yes. A web app has a single codebase, no store review, and simpler distribution. The price is weaker access to push notifications, sensors, and offline mode, plus the fact that it isn't where many users look – the app stores. For internal tools, though, the web app is still often the right answer.
Does AI make app development cheaper?
AI tools make developers faster, especially on routine code and tests, and that compresses the hours in some phases. But requirements work, architecture, integrations, and the responsibility for making everything work together remain. Expect AI to shift where the hours go more than it eliminates them.
What's the single biggest cost driver in an app project?
Scope – the number of flows, roles, and integrations. Hourly rates differ by tens of percent between vendors, but scope can differ by a factor of ten. Anyone who wants to lower the price should therefore always start by trimming the feature list, not by haggling over the hourly rate.