MVP in 4 Weeks: How We Hit That Deadline (and What It Takes)

You have a SaaS idea. You want to test it on real users, not inside a slide deck. And you heard that we ship a SaaS MVP in 4 weeks starting at 8 000 CHF. Your first reaction is probably: "that's too good, where's the catch."

There's no catch. But there is a method, a precise scope, and something you have to bring to the table. In this article, I'll explain exactly how we hold that deadline, what goes into an MVP, what stays out, and what you need to provide so the 4 weeks don't slip. I'd rather be honest now than sell you a fantasy.

What "SaaS MVP in 4 weeks" really means

An MVP isn't a stripped-down version of your final product. It's the smallest version that answers one single question: are people using this, and are they willing to pay for it.

Concretely, an MVP we ship in 4 weeks contains:

• Clean authentication (sign-up, login, forgotten password).
• A user dashboard with the core feature, the one that creates the value.
• A back-office so you can manage your users and your data without calling me every time.
• Stripe (or another payment solution if your project needs it) wired in if your model is paid (subscription or usage-based).
• A production deployment, on a real domain name, ready to welcome your first users.

Stack: React and Next.js on the product side, a solid database, Stripe for payments. Nothing exotic. Tools I know inside out and that hold up as your product grows. If you want the detail of what we build from scratch, I go into it on the custom SaaS in Switzerland page.

What the MVP does not contain: the 12 secondary features on your roadmap, the "just in case" integrations, multilingual mode if you're launching in French-speaking Switzerland, ultra fine-grained roles and permissions, styled PDF exports. All of that will come, if the market confirms it's worth it. Not before.

The method, week by week

The 4-week timeline isn't a slogan. It rests on a strict breakdown. Here's what it looks like.

Week 1: framing and scope

We spend one or two sessions together to nail down the real question behind your product. Not "what do you want to build", but "what do we need to prove". We list every idea, then we cut. A lot. We keep the central user journey and we drop the rest into a "later" backlog.

By the end of the week, you've validated the mockups of the key screens and the scope is frozen. That freeze is the key to everything. If the scope shifts every three days, no timeline holds, not mine and not anyone's.

Weeks 2 and 3: building

This is where I build. Auth, database, dashboard, back-office, business logic. I ship you intermediate versions continuously, on a staging URL, so you see the product take shape and react fast.

This is also where AI comes into play, and I want to be clear about it.

Week 4: Stripe, testing and go-live

We wire in payments, we test the journeys end to end, we fix the details, and we deploy. You walk away with a product online, access to the back-office, and everything you need to welcome your first users.

AI, a controlled accelerator, not magic

A lot of agencies today sell speed by waving the word "AI" around like a magic wand. I'd rather tell you how I actually use it.

I use Claude Code as an accelerator on repetitive tasks: generating the structure of a module, writing tests, wiring up a form, producing the first version of a screen. It saves me real time on the mechanical part of development.

But AI doesn't decide the architecture, it doesn't choose what we cut, and it doesn't talk to your users. Those decisions are mine, made with you. Generated code gets reviewed, tested, reworked. An MVP shipped fast but shaky is a debt you pay back triple six months later. The acceleration is there to deliver a clean product sooner, not to deliver just anything faster.

It's that combination, tight method plus controlled AI tooling, that makes the 4-week timeline realistic for a real MVP, and not just for a mockup.

What you need to bring so it holds

Here's the part people often hide from you. The 4-week deadline isn't just my job, it's a two-way commitment.

You have to be available. Not full time, but responsive. When I ask you a question or send you a version to validate, I need an answer that day or the next, not in two weeks. A three-day block on one decision is three days lost out of four weeks. That's huge.

You have to decide fast. An MVP is a string of small trade-offs. This button here or there, this field required or not, this journey in two or three steps. If every decision needs a committee meeting, we won't make it. I need a single point of contact who calls the shots.

You have to accept cutting things. That's the hardest one. You'll want to add things along the way, because one idea leads to another. Every addition pushes the launch back. My job is to say no gently and note the idea down for the next version. Your job is to trust me on that.

You have to prepare your content. Copy, logo, any starting data. If the content arrives at the last minute, it becomes the bottleneck, not the code.

If those four conditions are met, the 4 weeks hold. I've lived it enough times to guarantee it. If they're not, better to know from the start and plan a bit more margin, rather than kid ourselves.

Why this format beats a big project

A six-month project that sprawls in every direction costs a lot and proves little. You invest heavily before you have the slightest proof that the market wants your product. That's the best way to spend half a year building something nobody was waiting for.

The 4-week MVP flips the logic. You invest little, you learn fast, you adjust. Starting at 8 000 CHF, you have a real product online. Then we iterate on what real users tell you, not on what we imagined at the start.

This approach also has an obvious budget upside. You don't sink your whole budget into the first version. You keep margin for the iterations, which are often where the real product gets decided. If you want to understand how the overall budget is built, I broke down the price of a custom SaaS in another article.

Is your idea a good candidate

Not everything fits into 4 weeks, and I'd rather tell you before we sign. A platform with complex financial flows, heavy regulatory compliance, or integrations to temperamental third-party systems takes more time. There, we slice differently: we first target the core that fits in 4 weeks, and we plan the rest.

But for the vast majority of SaaS ideas I see, a B2B tool, a client portal, a simple marketplace, an operational dashboard, the 4-week format fits perfectly. The only way to know for your case is to talk about it.

If you have an idea rattling around in your head and you want to know what your MVP would look like in 4 weeks, write to me. We take thirty minutes, I tell you straight whether it's doable in the timeframe, what we'd cut, and what it would cost. You can see everything we build on the custom SaaS in Switzerland page. No sales talk, just an honest answer, builder to builder.