You have an idea. You're excited about it. You want to start building. But before you spend $3,000-$8,000 on an MVP, there's a question worth answering first: can this actually be built the way you're imagining it?

That's what a proof of concept is for.

A PoC is the cheapest, fastest way to test whether your core idea is technically possible. Not whether people will pay for it. Not whether the design looks good. Just: does the technology work?

I've built PoCs for founders who needed to test AI features, real-time data syncing, third-party API integrations, and payment flows before committing to a full build. Sometimes the PoC confirms the idea works and we move to the MVP. Sometimes it reveals a technical wall that changes the entire approach. Either way, it saves time and money.

This guide covers what a PoC is, when you need one, how it's different from a prototype and an MVP, and how I use it in my process.

What does PoC mean?

PoC stands for proof of concept. In software, PoC means testing whether your core idea is technically possible before building the full product. It's a small, focused experiment that answers one question: "Can this actually be built?"

A PoC is not a product. It's not something users sign up for. It's not something you show investors. It's a technical experiment. You build just enough to prove that the hardest part of your idea actually works.

If your app idea depends on a specific API returning data in a specific format, build a PoC to test that API. Don't design 40 screens around an API you haven't tested.

If your product needs real-time syncing between two devices, build a PoC to make sure the sync works. Don't write the rest of the code first.

If you're planning to use AI for a core feature, build a PoC to test whether the AI model gives useful results. Test it with your data, not just demo data.

The PoC answers the "can we?" question so you don't waste weeks building something that turns out to be technically impossible.

PoC vs prototype vs MVP

Founders mix these up constantly. Here's the difference.

Proof of concept (PoC). Tests whether the idea can be built. Focuses on the riskiest technical assumption. No design, no users. Just a test. Typically takes a few days.

Prototype. Tests whether the design and flow make sense. Usually a clickable Figma mockup. Users can tap through screens but can't actually do anything. Looks like a product but doesn't function like one. Takes a few days to a week.

MVP (minimum viable product). Tests whether people actually want the product. It's a real, working product with auth, core features, and a live URL. Users sign up, complete tasks, and give real feedback. Takes 2-6 weeks. I wrote a full guide on this: MVP Development: The Complete Guide

Here's how they connect. A PoC proves the tech works. A prototype proves the design works. An MVP proves the market works. They're sequential. You don't always need all three, but when you skip the PoC on a technically risky project, you risk building an MVP around something that doesn't work.

When you can skip the PoC

Not every project needs one. If your product uses proven technology in a standard way (auth, CRUD operations, basic dashboards, payment processing through Stripe), you don't need a PoC. These things work. I've built them dozens of times.

Skip the PoC and go straight to the MVP when:

  • Your product uses a standard tech stack with no unusual requirements
  • The core feature is well-understood (forms, lists, dashboards, payments)
  • There's no third-party dependency that could fail
  • You're not integrating AI, real-time data, IoT, or blockchain

When you need a PoC first

Build a PoC before committing to the full project when:

  • Your product depends on a third-party API you haven't tested
  • The core feature involves AI or machine learning
  • You need real-time syncing, live data feeds, or hardware integration
  • The business model requires a specific technical capability that hasn't been verified
  • An investor or stakeholder needs technical validation before funding the build

What a PoC includes (and what it doesn't)

A PoC in software development is small. Really small. It tests one thing.

What it includes:

  • The single riskiest technical component of your idea
  • Just enough code to prove it works
  • A clear pass/fail result

What it doesn't include:

  • User interface design
  • Auth or user management
  • Database architecture
  • Responsive layouts
  • Deployment to a live URL
  • Anything a user would interact with

If your PoC has a login screen, you've gone too far. If it has navigation, you've gone too far. A PoC is ugly, minimal, and disposable. It's meant to answer one question, then get thrown away (or absorbed into the MVP code).

How I use PoCs in my process

Most projects I take on don't need a separate PoC phase. The tech stack I use (Nuxt.js, Supabase, Tailwind CSS, Stripe) handles most common requirements out of the box. Auth, database, payments, file storage, real-time updates. All proven. No surprises.

But some projects have a wildcard. A feature that depends on something untested. When that comes up, I build a PoC before scoping the full MVP.

Here's how it works in practice.

Step 1: Identify the risk. On the discovery call, I listen for the part of the idea that makes me think "I need to test this before I can quote a timeline." It's usually an integration, an AI feature, or a data processing requirement.

Step 2: Isolate the test. I strip the question down to the smallest possible experiment. Not "can I build this whole product?" but "can this API return the data I need in under 2 seconds?"

Step 3: Build and test. A few hours to a few days of focused coding. No design. No polish. Just the test.

Step 4: Share the result. I tell the founder what I found. If it works, we move to the MVP with confidence. If it doesn't, we adjust the approach before spending $3,000-$8,000 on a build that would've hit a wall.

The PoC usually takes 1-3 days. It's either included in the discovery phase of an MVP project or done as a small standalone engagement.

Real example: PoC for Trackora's estimate tracking

When I was planning Trackora (my SaaS for freelancers), the core feature was comparing estimated project hours to actual hours. Simple concept. But the implementation had a question mark.

The question: could I automatically map logged hours to specific task estimates and show the gap in real time? Without making the user do any extra work?

The alternative was making users manually tag every time entry with an estimate. That would've worked technically, but the UX would've been terrible. Nobody wants to select an estimate from a dropdown every time they start a timer.

So I built a small PoC. No UI. Just backend logic. Tasks with estimates in a database. A timer that logs hours against a task. A query that compares the two and returns the difference.

It took about a day. The result: automatic mapping worked. No manual tagging needed. That one test shaped the entire product architecture. If it had failed, I would've designed the MVP differently.

That's the value of a PoC. One day of testing saved weeks of building the wrong thing.

PoC vs MVP: which one do you need?

The shortest way to decide.

You need a PoC if your idea has a technical unknown. Something you've never built, an API you've never used, a data flow you haven't tested. The PoC removes the risk before you invest in the full build.

You need an MVP if your idea uses proven technology and the real question is whether people want it. The risk isn't technical. It's market risk. Will users sign up? Will they pay? Will they come back?

You need both if your idea has a technical unknown AND you need to validate market demand. Build the PoC first (days), then build the MVP (weeks).

Most founders I work with go straight to the MVP. The tech stack I use handles 90% of standard product requirements. But for that other 10%, the PoC is what keeps the project from going sideways.

How long does a PoC take?

1-3 days for most software PoCs. If your PoC is taking more than a week, you're probably building a prototype, not a PoC.

Here's a rough breakdown:

  • Testing a third-party API: 1 day
  • Testing an AI model with real data: 1-2 days
  • Testing real-time data sync: 1-2 days
  • Testing a complex data processing pipeline: 2-3 days

The output isn't a product. It's a clear answer: yes this works, or no it doesn't, here's why, and here's what we can do instead.

How much does a PoC cost?

For most projects, the PoC is included in the discovery phase of the MVP engagement. It's not a separate invoice. When I scope a project and identify a technical risk, I test it as part of the first week.

If you need a standalone PoC (before deciding whether to build the full product), expect:

  • Solo developer: $500-$2,000 for 1-3 days of focused testing
  • Agency: $5,000-$15,000 (because they'll scope it like a project, add meetings, documentation, and overhead)

My approach: if the PoC is part of a larger MVP engagement, it's built into the project cost. If you need a standalone test before committing, we can scope that separately. Either way, it's the cheapest insurance policy you can buy for a software project.

5 mistakes founders make with PoCs

1. Treating the PoC as a product demo. A PoC is not something you show users or investors. It's a technical test. If you're adding design and polish to a PoC, you're building a prototype.

2. Testing too many things at once. One PoC, one question. If you have three technical risks, build three separate PoCs. Bundling them makes it impossible to isolate what worked and what didn't.

3. Skipping the PoC on a risky project. "Let's just build it and see" is expensive when you're 3 weeks into development and discover the core API doesn't support your use case. A 1-day PoC would've caught that.

4. Over-engineering the PoC. If your PoC has a database schema, auth system, and responsive CSS, you've over-built it. The whole point is to be minimal and disposable.

5. Confusing PoC results with market validation. A successful PoC proves the technology works. It does not prove that people want the product. You still need an MVP to test market demand.

Start here

If you have an idea and you're not sure whether the core technology will work, don't build the full product first. Test the riskiest piece in isolation. A few days of focused testing can save you weeks of wasted development.

If the technology checks out, you're ready for the MVP. I take founders from idea to shipped product in 2-3 weeks. Most projects start at $3,000. If there's a technical question mark, I test it first.

Tell me what you're building. I'll get back to you within 24 hours.