An app developer turns your need into a working mobile app for iOS and Android. It is more than code: requirements, UX, backend, integrations, testing and App Store / Google Play release. At ScriptSector you get a team that owns the full chain - from a six-week MVP Sprint at a fixed SEK 60,000 to larger business apps. Want price ranges first? See what an app costs, or book a call.
Role and responsibilities
An app developer does more than build screens. The role connects your business needs with user journeys, data and working software. You provide knowledge of your operations and decide priorities. The developer helps turn those priorities into something that can be built, tested and maintained.
Work starts with discovery: who will use the app, what problem should it solve, and what must work at launch? This also means reviewing existing systems, data sources and technical dependencies. The outcome should be a defined scope with clear priorities, rather than an expanding wish list.
As a buyer, distinguish between essential functions and features that can wait. For a work-order app, completing the journey from assignment to reporting may matter more than sophisticated dashboards. An MVP should test a meaningful use case, not offer a small piece of every planned feature.
The developer then needs to address the path from concept to use:
- UX and design: Make navigation, forms and feedback understandable. Prototypes let you identify misunderstandings before functionality is coded. Accessibility should be considered from the start.
- Code and app features: Build the interface, local storage and capabilities such as camera access or notifications where needed. Handle errors and interrupted journeys as well as successful actions.
- Backend and integrations: Set up authentication, permissions, databases and connections to your systems. Sensitive information and secret keys need appropriate protection, rather than being exposed in the app.
- Testing: Check core journeys on relevant devices. Include denied permissions, poor connectivity and failures in external services. You also need to confirm that the app works for your business process.
- Store release: Prepare builds, descriptions, screenshots and privacy information for App Store and Google Play. Store review is a separate step and may require changes or additional information.
Responsibility does not end at release. Agree who monitors errors, updates dependencies and handles operating-system changes. Make sure you can access the source code, accounts and documentation. The ScriptSector app development page explains the approach from idea to launch.
Native vs React Native
Native development uses each platform's own tools, typically Swift for iOS and Kotlin for Android. React Native allows much of the code to be shared across platforms. Either approach can produce a good app. Your requirements should guide the decision, not a developer's preferred tool.
React Native is often relevant when you need similar functionality on iOS and Android. Shared code can simplify development and maintenance, but it does not remove platform-specific work. Notifications, permissions, payments and store submission still require attention on each platform.
Native may be more suitable for deep operating-system integration or demanding graphics and platform-specific behaviour. You still need to weigh those benefits against maintenance needs and the expertise available to support the product.
Ask for a recommendation based on your most important journeys. Are suitable libraries available? Could any dependencies become difficult to maintain? Should a technical uncertainty be tested before the rest is built? The guide to technology choices for iOS and Android apps explores these trade-offs.
What it costs
Cost mainly depends on scope, technical complexity and how much is already understood. Authentication, for example, can be straightforward in an isolated workflow but more involved when it must follow your organisation's permission structure and connect to existing systems.
These figures provide a starting point for budgeting:
- A simple app can start from about SEK 40,000.
- MVP Sprint runs for six weeks at a fixed SEK 60,000 excl. VAT.
- A complete business app often costs SEK 200,000-500,000.
- An advanced app starts from about SEK 500,000.
MVP Sprint suits a clearly defined core journey. A fixed price depends on an agreed scope. It does not mean that every feature in your long-term product plan fits into the sprint.
Ask for a breakdown that separates development from ongoing hosting and maintenance. Check potential charges for external services as well. Apple Developer costs USD 149 per year, while Google Play has a one-time USD 25 fee. Store accounts should remain under your control even when the developer manages submission.
For more detail on budget drivers, read how much it costs to develop an app. A useful proposal explains both what is included and which assumptions underpin the price.
When to hire an agency
Hire an external development partner when you need help connecting requirements, technology and release, rather than simply coding a finished specification. This is particularly useful when integrations, security or unclear user journeys require decisions before development can progress.
ScriptSector is run by Anton Kihlström. You speak directly with the person developing your app. Before starting, discuss scope, availability and support arrangements. If you need substantial parallel staffing, a different setup may be more appropriate.
Ask how changes are prioritised, when you will see working software and how approvals are recorded. Appoint a decision-maker on your side too. A developer can recommend solutions, but cannot replace your understanding of customers, processes and business goals.
Match the schedule to the deliverable. The service-page guidance is 2-4 months to a launched MVP, while MVP Sprint is a scoped six-week engagement. Advanced apps often take 4-6 months. System access, feedback and store review affect planning. Read more about how long it takes to develop an app.
Frequently asked questions
Do you need a complete specification before getting in touch?
No. Start with the problem, intended users and most important journey. Discovery helps define the scope. Existing process descriptions and practical examples make that discussion more productive.
Does the app need to support both iOS and Android?
No. Base the decision on your users' devices and how the app will be distributed. An internal tool may have different platform requirements from an app intended for a broad customer audience.
What happens after launch?
You need an agreed approach to hosting, error handling and updates. Decide what maintenance includes and what counts as further development before the app is published.
Want to clarify what your app needs and what can wait? Contact ScriptSector and describe your most important use case.