How long does it take to build an MVP? Phases, delays and app store timelines

How long does it take to build an MVP?

As long as you decide before you start, because with an MVP the deadline shapes the scope, not the other way round. Ask how long it will take to build everything on your list and you will usually get a long project and a late answer.

In his Startup School lecture on planning an MVP, Michael Seibel of Y Combinator argues you should be able to build one in weeks, not months; some startups can begin with a landing page and a spreadsheet, while hardware, biotech and regulated sectors need longer. Basecamp's Shape Up method runs on six-week cycles, on the reasoning that six weeks is long enough to build something meaningful from start to finish.

Compare that with Clutch's pricing data, drawn from verified client reviews, which puts the average software development project at around 13 months. An MVP that looks like that average has stopped being an experiment: it is a product built before anyone knows whether it is needed.

What are the phases, and what decides how long each one takes?

There are five, each governed by one main factor. Where public reference points exist, we have included them; treat them as starting points for planning, not promises. Google Ventures' Design Sprint is a useful reminder of how compressed the prototype phase can be.

Two of the five phases have nothing to do with writing code. Good validation means the build starts with fewer unknowns; the method is in how to validate a startup idea. Sometimes a no-code test answers the question before any build starts: see types of MVP.

What makes MVP timelines slip?

Usually a scope that grows without anyone deciding it should. The other usual suspects:

• Silent scope creep: every while-we-are-at-it adds days, and without a written spec nobody notices.
• Slow decisions: product questions left open for days block a team more than any bug.
• Third-party integrations: patchy documentation, missing sandbox environments, credentials still awaited.
• Several platforms at once: web, iOS and Android in parallel multiply testing and releases.
• Late content and data: copy, price lists and import files that arrive when the build is almost done.
• Store and platform rules: a rejection in review means fixing and resubmitting.

How long do the App Store and Google Play take?

Apple's review is usually quick; Google Play can take up to a week, and new personal developer accounts must run a mandatory closed test before they can publish at all. Put both in the plan rather than discovering them on launch day.

Google also notes that some apps face extended reviews of up to 7 days or longer in exceptional cases. Apple says it reviews at least 50% of submissions in under 24 hours and 90% in under 48, and warns that incomplete submissions are delayed or rejected (App Review). The full walkthrough is in how to publish an app on the App Store.

How do you shorten the timeline without cutting quality?

Fix the date and let the scope give. It is a discipline rather than a trick, and it works whether or not you write the code yourself.

When is a delay a warning sign?

When nobody can explain it. A delay with a known cause, such as a store rejection or a slow integration partner, can be managed; an unexplained one usually hides scope that is out of control.

• Weekly demos get skipped or keep showing the same screens.
• Nobody can say what is left and in what order.
• Every meeting adds features and none removes them.
• Launch keeps moving to squeeze something else in, rather than to fix a real problem.

Time turns into money, so the drivers in MVP development cost apply here too. And if you hope AI tools will collapse the schedule, read how to build an MVP with AI first: the prototype arrives sooner, production readiness not always.