How long does it take to develop an app? A realistic timeline

A typical app takes about 3 to 6 months, or roughly 12 to 24 weeks, from first idea to a public launch. A lean first version can ship in 8 to 12 weeks, while a complex or regulated app can run 9 months or more. This guide breaks the work into five phases with typical week ranges, then shows how complexity and platform choices stretch or shorten the schedule, so you can plan around real timelines instead of a single number.

By Kanika Mathur, Head of Service Delivery

Reviewed by Resourcifi engineeringPublished Jan 28, 2026Updated Jan 28, 20268 min read

Timeline

Key takeaways

The short version

A typical app takes 3 to 6 months, about 12 to 24 weeks, from idea to launch. Plan to a range, not a single date.
A lean first version is faster. A focused minimum viable product often ships in 8 to 12 weeks because the scope is deliberately small.
The five phases are discovery, design, build, QA, and launch. Build is the longest and varies the most with scope.
Complexity is the biggest driver. Custom logic, integrations, and security or compliance work add weeks or months, not days.
Platform matters. One cross-platform codebase is usually faster than two separate native builds for the same feature set.

How long does it take to develop an app?

A typical app takes about 3 to 6 months, roughly 12 to 24 weeks, to go from a clear idea to a launched product on the app stores. A deliberately lean first version can ship in 8 to 12 weeks, while an ambitious app with heavy custom logic, many integrations, or strict compliance needs can take 9 months or more. There is no single correct number, because the timeline is set by the size of the scope and the number of unknowns, not by the calendar.

The most reliable way to plan is to size the work in phases and add a buffer for the parts you cannot fully predict yet. The phase table below gives typical week ranges you can adapt to your own scope. For a smaller, build-the-core-first approach, our MVP cost and timeline guide covers how to scope a first release that ships sooner.

The app development timeline, phase by phase

App development runs in five phases: discovery, design, build, QA, and launch. Discovery and design define what you are making, the build phase is the longest and most variable, QA runs alongside and after the build, and launch includes the app store review wait. The table shows typical week ranges for a standard consumer app on a single timeline. Phases overlap in practice, so the total is usually shorter than the sum of the parts.

The build phase varies the most from one project to the next. A GoodFirms survey of 267 app development companies found that core development alone runs about 3 to 7 weeks for a simple app, 8 to 14 weeks for a complex one, and 13 to 19 weeks for an advanced app. Those figures line up with the development row in the table, where most projects land between 6 and 16 weeks once the design is settled.

Typical app development phases and week ranges
Phase	Typical weeks	What happens
Discovery and planning	2 to 4	Requirements, scope, wireframes, roadmap
UX and UI design	2 to 6	Screen flows, visual design, a design system
Development	6 to 16	Backend, app code, integrations, the core build
QA and testing	2 to 6	Functional, regression, performance, security checks
Launch and store review	1 to 2	Store submission, review wait, release

Two phases tend to surprise teams. Design takes longer when the product is new and the flows have not been validated, and launch carries a review wait you do not control. Apple reports that on average 90 percent of submissions are reviewed in less than 24 hours, while a first submission to Google Play can take up to seven days, and longer in rare cases, so build that wait into the plan rather than promising a launch date inside it.

How complexity changes the timeline

Complexity is the single biggest driver of how long an app takes, and the GoodFirms research tiers projects the same way, by simple, complex, and advanced scope. Counting the full span from idea to launch, a simple app with a handful of screens and little custom logic can be ready in about 2 to 3 months. A medium app with accounts, a backend, and a few integrations usually runs 4 to 6 months. A complex app with custom workflows, real-time features, or compliance needs commonly takes 9 months or more. The table below maps these tiers to typical durations so you can place your own project.

App timeline by complexity level
Complexity	Typical total	Example
Simple	2 to 3 months	A content, booking, or utility app
Medium	4 to 6 months	Accounts, backend, a few integrations
Complex	9 months or more	Real-time, custom logic, or compliance

3-6

Months for a typical app from idea to launch.

Industry timelines

8-12

Weeks for a focused first version, or MVP.

Industry timelines

15-20%

Buffer to add for unknowns and change requests.

Common practice

Scope decides the tier, so the fastest way to shorten a timeline is to cut scope, not to add people late. For a deeper look at how features and effort translate into budget and schedule, see our guide on custom software development cost.

Platform choice and what else affects the timeline

Platform choice has a clear effect: building one cross-platform app from a shared codebase is usually faster than building two separate native apps for iOS and Android with the same features, because most of the work is done once. Native builds can be the right call for performance-heavy or deeply platform-specific apps, but they add testing and maintenance across two code paths. Beyond platform, the timeline moves with feature scope, the number of third-party integrations, security or compliance requirements, team experience, and how often the scope changes mid-build.

Cross-platform: one codebase for both stores, usually the fastest route to launch.
Native iOS or Android: strong per-platform results, but more to build and test per platform.
Integrations: payments, maps, and external services are routinely underestimated.
Compliance: health, finance, or data rules add discovery, testing, and review time.
Scope changes: mid-build changes trigger rework across design, code, and QA.

If you are still shaping the idea, our walkthrough on how to build an app covers the steps before the clock starts, and our website development timeline compares the schedule for web projects. When you are ready to staff the team, see how Resourcifi approaches mobile app development from scoping through launch.

Frequently asked

App development timeline questions

How long does it take to develop an app on average?

A typical app takes about 3 to 6 months, roughly 12 to 24 weeks, from a clear idea to a public launch. A deliberately lean first version can ship in 8 to 12 weeks because the scope is kept small on purpose. A complex app with custom logic, many integrations, or compliance needs can run 9 months or more. The honest answer is always a range tied to scope, not a single fixed date, so plan to a window and add a buffer.

What are the phases of app development and how long do they take?

App development runs in five phases. Discovery and planning take about 2 to 4 weeks, UX and UI design take 2 to 6 weeks, development takes 6 to 16 weeks, QA and testing take 2 to 6 weeks, and launch with store review takes 1 to 2 weeks. Development is the longest phase and the one that varies most with scope. Phases overlap in real projects, so the total is usually shorter than adding every range together.

Can you build an app in a month?

One month is tight for a full app, but it is possible for a very small prototype or a single-feature tool with no backend and minimal design. A genuine first version that people can use, or a minimum viable product, more realistically needs 8 to 12 weeks. Trying to compress a real app into four weeks usually means cutting QA or design, which tends to cost more time later in rework. A short, focused scope is the only reliable way to move fast.

Does an iOS app take longer than an Android app?

For a single platform, iOS and Android take broadly similar time for the same features, though Android often needs more testing across a wider range of devices and screen sizes. The bigger timeline difference is building both natively versus building one cross-platform app. Two separate native builds roughly add up to more total work, while a shared cross-platform codebase does most of the work once. The right choice depends on performance needs and how platform-specific the app has to be.

Why do app projects take longer than estimated?

Most overruns come from scope growing during the build. New features, extra integrations, and design changes each trigger rework across code, QA cases, and release plans. Underestimated third-party integrations and compliance requirements are common culprits, and app store review adds a wait you do not fully control. The practical fixes are to lock a clear scope, add a 15 to 20 percent buffer for unknowns, and treat any mid-build change as a deliberate trade against the date.

How can you develop an app faster without cutting quality?

The most reliable way to ship sooner is to narrow the scope, not to add people late. Start with a focused minimum viable product that solves one problem well, then add features after launch based on real use. Choosing one cross-platform codebase, reusing proven components, and validating designs early all remove rework. Running QA alongside development rather than only at the end also saves time. Speed comes from doing less at once, with clear priorities, not from rushing the same large plan.

Kanika Mathur

Head of Service Delivery, Resourcifi

I am Kanika Mathur, Head of Service Delivery at Resourcifi. I plan delivery timelines with product teams every week, and the honest answer is always a range tied to scope, not a single date. This guide reflects how we estimate and run app builds for clients, grounded in the products we have shipped since 2017.

Resourcifi on LinkedIn →

Sources

GoodFirms, GoodFirms 2022 survey of 267 app development companies (development time of 3 to 7 weeks for simple, 8 to 14 for complex, and 13 to 19 for advanced apps).
Apple, App Review (on average 90 percent of submissions are reviewed in less than 24 hours).
Google Play, Publish your app (first review can take up to seven days or longer in exceptional cases).
GoodFirms, Key Factors Affecting Mobile App Development Time (survey of app development companies; time factors by platform, complexity, and team).