How long does it take to build a mobile app

Short answer

Building a simple mobile app rarely takes less than 3 weeks. For a clean, shippable MVP, 4 to 6 weeks is realistic when the scope is locked from the start. Projects blow past that fast when design, integrations, or scope changes pile up.

The timeline depends less on code than on scoping

Most mobile projects don't fall behind because of development. They fall behind because nobody decided what actually needed to be shipped.

A mobile app can be built fast when the flow is clear. Login, profile, list, detail, form, notification, publish. That kind of scope plans well.

The timeline explodes when the project moves forward on sentences like "we'll figure it out during development." You don't figure it out during development. You pay during development.

At Inyka, the standard timeline is 4 to 6 weeks for a clear MVP or mobile V1. It holds because the stack is chosen up front: React Native, Expo, Supabase, and TypeScript.

Week 1: scoping and a simple architecture

The first week is about shrinking the project. This is when you choose the flows, the roles, the screens, the data, and the boundaries.

Good scoping doesn't look like an 80-page spec. It looks more like a clear map of the product: who uses the app, why, with what data, and what result needs to be reached.

You also need to identify the integrations. Stripe, business API, booking tool, CRM, email, file storage. One unknown integration can change the whole schedule.

By the end of this phase, the project should be quotable and plannable with no gray zones. The mobile app MVP page follows this logic.

Week 2: useful design, not decoration

An MVP's design should make the flow readable. It shouldn't be trying to impress.

The main screens are laid out, empty states are planned, errors are handled, the important buttons are visible. This work saves a lot of back-and-forth during development.

Design can stretch a project when every screen demands a heavily custom identity. A mobile interface with standard components can be clean, fast, and credible. A design that's too ambitious for a V1 becomes a permanent tax.

At Inyka, design serves the timeline. It should help you build, not open up ten new directions.

Weeks 3 to 5: building the app

Development covers the iOS app, the Android app, the backend, the data rules, and the screens. With React Native, a large part of the code is shared across both platforms.

Supabase lets you move fast on the standard needs: authentication, a Postgres database, storage, and access rules. Expo simplifies builds, testing, and getting ready to publish.

This timeline stays realistic as long as the scope doesn't change every week. Adding a payment flow, a back office, or messaging after the quote is signed isn't a detail. It's a new piece of product.

A good studio has to say no to some additions. Otherwise the schedule becomes fiction.

Week 6: QA, stores, and fixes

The last phase is for testing. It has to exist even on an MVP. An app that crashes on open isn't an MVP, it's a waste of time.

Testing covers the main flows, user accounts, errors, permissions, real devices, basic performance, and the copy. Publishing also requires the App Store and Google Play listings.

Apple and Google ask for information about the data you collect, privacy, and the app's content. This needs to be prepared before submission, not on Friday night.

What actually stretches a mobile project

The number one cause of delay is scope change. Adding "just a small feature" can touch the backend, the design, the tests, and publishing.

The second is a poorly documented external integration. A clean API can take a day. An unstable API can take a week.

The third is custom design. An app with animations, fine transitions, and heavily custom components takes more time than a simple business app.

The fourth is slow sign-off on the client side. When every decision waits three days, the overall timeline stretches. It's not a technical problem, but it costs just as much.

Why 4 weeks can be enough

Four weeks can be enough for a simple mobile app if the scope is strict. You need one main flow, few roles, a standard backend, and no heavy integrations.

Inyka's Essential package starts at €7,500 for this kind of need. It targets a first, simple mobile app or a light MVP.

For an app shippable on the App Store and Google Play, the Launch package starts at €14,000 and aims for 4 to 6 weeks. For a key business module, the Scale package starts at €24,000 with a timeline of 6 weeks and up.

The timeline isn't a magic promise. It's the result of a scope that's held.

Sources

Frequently asked questions

Can you build a mobile app in 2 weeks?

Yes, but only for a prototype or a very limited scope. A shippable app with a backend, tests, and store submission rarely takes that little time.

Why does publishing take time?

Publishing requires clean builds, store listings, screenshots, a privacy policy, and data declarations. Apple and Google can also ask for fixes.

Is the timeline the same for iOS and Android?

With React Native, a shared base speeds up development. There's still some platform-specific testing on each side.

What's a good timeline for a mobile MVP?

For a clean MVP, 4 to 6 weeks is a good benchmark. Below that, you have to cut the scope hard.