Why Do Some MVP Quotes Say 20 Days and Others 6 Months? The 6 Decisions Behind the Gap

Two quotes, two different projects

A short quote and a quote that runs for months usually make different assumptions about the project. For each decision, here is what keeps a build near 20 days and what pushes it toward months:

• Scope. What keeps it near 20 days: written down and frozen before the build. What pushes it toward months: discovered during the build.
• Price model. What keeps it near 20 days: a fixed quote agreed up front. What pushes it toward months: billed by the hour or the sprint.
• Design. What keeps it near 20 days: done inside the build, on proven patterns. What pushes it toward months: a separate phase with open revision rounds.
• Platforms. What keeps it near 20 days: iOS and Android from one project. What pushes it toward months: separate native apps built one after another.
• Stack. What keeps it near 20 days: proven blocks for login, data and payments. What pushes it toward months: custom infrastructure from scratch.
• Decisions. What keeps it near 20 days: one founder answers within a day. What pushes it toward months: a committee, or answers that take a week.

How to read your quotes

Nothing on the months side is wrong. Some products need it. Most first versions don't, and every one of those choices adds weeks. Take each quote, go down this list and mark which side it falls on for each decision. The quote with the most marks on the months side will be the longest, however skilled the team is.

1. Scope: frozen or discovered

Scope matters more than any other factor. A short build starts with a written list: the user types, the screens, and the one core action the app exists for. Anything not on the list goes to v2. A long quote often assumes the details will be "figured out as we go." Each new detail becomes a new estimate, a new design and a new round of testing. The agency knows this, so it adds months to protect itself. What to do: before you ask for a quote, write down what v1 must prove and what it will not do. Our guide to the 10 questions an agency will ask about your MVP brief walks you through it, with weak and strong answers for each question.

2. Price model: fixed or open-ended

The way you pay affects how long the build takes. Our MVP Development package is Fixed at $3,460, delivered in about 20 days. You get a fixed quote before we start, so you know the price and the timeline from day one. The two models work like this:

• Fixed price. The scope is agreed first, then the price, then the build. Both sides have a reason to keep v1 small and to finish.
• Open-ended billing. The scope can grow without anyone deciding it should. A feature added in week 3 costs nothing that day, so it gets added.

3. Design: inside the build or before it

On many long projects, design is its own phase: wireframes, then mockups, then revision rounds, then sign-off, and only then development. Each round waits for feedback. In a short build, design is included and runs alongside the build. Screens use patterns your users already know from the apps on their phone: sign-up, onboarding, lists, detail pages, settings. You react to real screens, not to drawings of screens that don't exist yet. The app doesn't end up generic. The time goes into the screens that make your product different, not into redesigning a login form.

4. Platforms: one project or several

A native iOS app, then a native Android app, then a web app means up to three products to build, test and keep in sync. That alone can turn weeks into months. A short quote builds iOS and Android from one project instead of two. One set of features to build, one set of bugs to fix. Our MVP package covers the web, iOS and Android. When separate native apps make sense: heavy use of device hardware, or performance a cross-platform build can't reach. Most v1 products don't need that. If yours does, we'll say so on the call.

5. Stack: proven blocks or custom infrastructure

Most apps need the same foundations: user login, a database, an API, and payments if you charge. These are solved problems. Building them from scratch adds weeks and nothing your users will ever see. A short build uses proven tools for the foundations and spends the days on your core feature. You still own 100% of the code, on your own GitHub. Some features do need more time and sit outside a standard first version. Browse our feature cost guides to see how specific features change the scope. Not sure whether your idea needs custom work? Book a call and we'll tell you what fits a v1 and what doesn't.

6. Decisions: one day or one week

Founders control this factor more than any other, and think about it least. No quote can include it, because it depends on you. A build involves dozens of small questions. Should onboarding ask for a phone number? What happens when a payment fails? Can a user delete their account? If each answer comes back the next day, the build keeps moving. If each one waits for a weekly meeting, or for three co-founders to agree, a 20-day plan can quietly double. What keeps decisions fast:

• One person on your side has the final word on v1.
• That person checks progress at least once a week. We show progress every week.
• "Good enough for v1" is an accepted answer.
• New ideas go on a v2 list, not into the current build.

Which quote fits your idea?

Your MVP is a good fit for about 20 days if most of these are true:

• One or two user types, not a two-sided marketplace.
• One core action you can describe in a sentence.
• Familiar building blocks such as sign-up, profiles and a main screen, nothing that has to be invented.
• No regulated data such as health records or banking.
• One decision maker who can answer within a day.

What may not fit a v1 built in about 20 days

These may not fit a v1 built in about 20 days. Book a call and we'll tell you what fits a v1 and what doesn't.

• Two sides that pay each other, with payouts.
• AI features at the core of the product.
• HIPAA, fintech or similar compliance.
• Deep integrations with older enterprise systems.

How a long quote can become a short one

A long quote can often become a short one. Launch one side of the marketplace first, swap an automated step for a manual one, or move an admin feature to v2. You launch sooner and learn from real users before you spend more. See what has shipped on our projects page.

Find out which quote is realistic in 30 minutes

You don't need to guess whether your idea is a 20-day build or a project that runs for months. Bring your feature list and your quotes to a free 30-minute call. We'll tell you what fits a v1 and what to cut, and you get a fixed quote before we start. Book a call.

How long does it take to build an MVP?

A focused MVP with one core feature and user login can be built in about 20 days. Marketplaces, AI at the core, regulated data or an open scope take longer. Our guide on how long it takes to build an MVP breaks timelines down by complexity.

Why do some agencies quote months for an MVP?

They are usually quoting a different project: a separate discovery phase, design before development, native apps built one by one, or a scope that will be settled later. Ask each agency what is in v1 and what is not, then compare the timelines.

Can you build an MVP for iOS and Android in about 20 days?

Yes, when both apps come from one project and the scope is fixed before the build. Our MVP package covers the web, iOS and Android, design included. The code is 100% yours on your GitHub, with 2 weeks of fixes after launch.

What slows down an MVP build the most?

Scope that changes during the build, and slow answers from the founder's side. You control both. Freeze the v1 list, name one decision maker, and send new ideas to a v2 list.