How long does it take to develop an app?

Asking how long it takes to develop an app is about as common as asking what it costs. The short answer: a simpler first version can often be ready in 6–10 weeks, a more complete business app usually takes 3–6 months, and larger products with many integrations can take longer.

The longer answer is that the calendar is driven by what the app needs to do, how clear the scope is, and how quickly decisions are made along the way. Time rarely sits in the code alone. It sits in prioritisation, design, backend work, testing and release.

At ScriptSector we see the same pattern in project after project: when the first version is tightly scoped, it moves fast. When everything has to go into version one, the timeline slips, regardless of the tech stack.

Use this as a starting point. The figures are approximate, but more useful than "it depends".

An MVP can in some cases be built in 6 weeks, for example through our MVP Sprint. A launched, more complete first version more often lands at 2–4 months once design, testing and store release are included. That is also the range we publish on the homepage: 2–4 months to a launched MVP.

These figures assume the goal is clear and that someone can make decisions during the project. If that is missing, the calendar stretches more than most people expect.

A mobile app is rarely just screens on a phone. Behind what the user sees there is often a backend, a database, an API, an admin panel, integrations, and a release process for App Store and Google Play. That is why two apps that "look about the same size" can be months apart.

The main drivers of the timeline:

• Number of features and user flows
• Whether the app is built for iOS, Android or both
• The choice between native, React Native and a web app
• UX, wireframes and design
• Login, roles and permissions
• Backend, database and API
• Integrations with CRM, business systems, payments or BankID
• Testing, security and release
• How quickly you give feedback and decisions

An internal time-tracking app with one clear flow is faster than a customer app with payments, several roles and a connection to an existing business system. The difference is rarely how polished the UI looks. It is how many rules have to be true.

In our guide to iOS and Android app development we cover how platform and technology choices affect both the first version and what comes next. A poor choice there does not only cost money. It costs weeks.

Most app projects follow the same chain, whether they take six weeks or six months. What changes is how long each phase is allowed to run.

1. Goals, scope and priorities

Before anyone writes code you need to know which problem the app should solve, who will use it, and which features must exist in the first version. This phase often takes 1–2 weeks when it is run properly, and much longer if requirements keep arriving mid-project.

The clearer the split between "must have" and "can wait", the more predictable the rest of the calendar becomes.

2. Design and user flows

Wireframes, prototypes and design are not decoration. They are how you catch broken flows before they turn into expensive development. For a tightly scoped MVP, design may take a couple of weeks. For an app with several roles and many states, it takes longer.

Skipping this step rarely shortens the overall timeline. It just moves the rework into the middle of the project.

3. Development

This is where the app, backend and in-scope integrations are built. It is the longest phase: often 4–12 weeks for a first version, and more for a complete business app.

Agile sprints of 1–2 weeks mean you see working software early. This is also where unclear requirements show up. Every new feature added after kickoff moves the deadline.

4. Testing, polish and launch

Testing, bug fixes, App Store and Google Play accounts, and the review itself take time even when the code is "done". Plan for extra days up to a couple of weeks, especially the first time the app goes into the stores.

Apple and Google review new apps. It often takes a few days, but it can take longer if privacy texts, login or a demo account are missing. That time belongs to the project, even if it does not show up in the development sprints.

In From idea to app: the app development lifecycle we describe the chain in broader terms. The point here is different: every phase has a calendar cost, and you can influence it.

When apps overrun, it is rarely because developers "code slowly". These are more common:

Too much in version one. An app with three clear flows can be planned. An app that tries to cover every future need on day one cannot be scheduled honestly.

Fuzzy scope. If "login" turns out to mean BankID, roles, password reset, a guest mode and a connection to an existing user directory, that is not the same task as a simple account.

Slow feedback. A two-week sprint quickly becomes three if decisions stall. You need someone who can answer questions during the project, not only at kickoff.

Integrations without access. BankID, payments, CRM and business systems are all fine to build against, but only if there is an API, documentation and a test environment. Without those, development stops even when the team is ready.

A technology choice that does not match the goal. Two fully separate native apps take longer than a shared React Native codebase, unless the app needs deep hardware integration. The reverse is also true: the wrong shortcut can force a rewrite later.

No plan after the code is done. Release, analytics, crash reporting and a first maintenance routine are part of launch. Without them, "done" becomes a moving target.

The same pattern shows up in cost. In How much does it cost to develop an app? we explain why the price varies. Time and cost almost always move together.

The fastest project is not the one that skips design and testing. It is the one that builds the right things in the right order.

1. Define the first valuable result. What should the user have achieved after five minutes in the app?
2. Cut the scope. Anything that is not required for that result waits until version two.
3. Choose platform on purpose. One platform can be enough to test. Both are often needed when the app goes to a broad customer base.
4. Make the technology choice early, based on how the app will be used, not on trend.
5. Have integrations, copy, assets and a decision-maker ready when the sprint starts.
6. Plan release from the start: developer accounts, privacy policy, test data and review.

An MVP is the practical answer for most companies that want to ship quickly. The goal is not half an app. The goal is a first version you can use, measure and keep building.

If you want the full chain from idea to launch in one place, it is in our complete guide to app development.

Can you develop an app in 6 weeks?

Yes, if the first version is tightly scoped. That is the setup in our MVP Sprint: a working app with a core flow, backend and API, not the full vision. A more complete business app usually takes 3–6 months.

How long does App Store and Google Play release take?

On top of development you need time for developer accounts, test data and review. Plan for extra days up to about two weeks the first time, especially if privacy texts or a demo account are missing.

Is React Native faster than native?

Often, when the same app needs to exist on both iOS and Android. Native can still be the right call when performance or hardware integration leads. We cover that choice in the iOS and Android app development guide.

We start with the goal, the users and the features that actually have to exist in the first version. From there we produce a timeline you can follow, with sprints, demos and clear milestones.

If you want to test an idea quickly, we build a working MVP in 6 weeks at a fixed price. For a more complete business app we work in 1–2 week sprints towards a launch that most often lands at 3–6 months, depending on integrations and scope.

You own the source code, design and documentation. The timeline is not a promise that "everything will fit". It is an agreement on what is included by which date.

Want to know how long your app would take? Contact ScriptSector and we will go through the idea, the scope and which first version is reasonable to put on the calendar.