Founders hear three terms constantly — proof of concept (PoC), prototype and MVP — and often use them interchangeably. They are different tools that answer different questions. Choosing the right one can save months and a lot of money.
The one-line definitions
| Term | The question it answers | What you get | Who uses it |
|---|---|---|---|
| Proof of concept | “Can this be done?” | A small experiment proving technical feasibility | You and your tech team |
| Prototype | “How will it look and feel?” | A clickable design or demo | Investors, designers, test users |
| MVP | “Do people want it and will they pay?” | A real, working product with core features | Genuine customers |
Proof of concept: is it technically possible?
A PoC is a quick, throwaway experiment. It is useful when there is a real technical risk. For example: “Can an AI model read our invoices accurately?” or “Can we get live location updates fast enough?”
A PoC usually has no design, no login and no polish. It either works or it does not — and that answer can save you from a costly mistake. If your idea uses well-known technology (a booking site, an online store), you can skip it.
Prototype: show, don’t guess
A prototype is a visual model of your product — often clickable screens made in a design tool. It lets people react to the flow and design before any code is written.
Use a prototype to:
- Agree on screens and features with your team.
- Test the idea with a handful of potential users.
- Show investors or partners what you plan to build.
- Estimate development cost and time more accurately.
Changing a design is far cheaper than changing finished software, which is why prototypes pay for themselves.
MVP: the smallest real product
An MVP (minimum viable product) is working software with just enough features to solve one problem for one type of customer. It is released to real users so you can learn from their behaviour — what they use, where they get stuck and whether they will pay.
An MVP is not a bad or unfinished product. It is a focused one. For example, an MVP for a food delivery business might include restaurant browsing, ordering, payment and a basic admin panel — but not loyalty points, referral codes or advanced analytics. See what a lean first version contains in our food delivery app example and CRM example.
Which one do you need?
- Unsure whether the technology works? → Start with a proof of concept.
- Unsure what the product should look like? → Build a prototype.
- Confident about the design and want market feedback? → Build an MVP.
- Already have paying customers? → Improve and extend the real product.
Most business ideas go straight from a prototype to an MVP.
Common mistakes
- Calling a full product an “MVP”. Adding every feature defeats the purpose.
- Treating a prototype as a product. Clickable designs cannot process real orders.
- Skipping user feedback. The whole point is to learn.
- Never saying no to features. Keep a “later” list and protect the core.
How the three fit your budget
PoCs and prototypes are the cheapest ways to reduce risk. An MVP costs more but gives real data. Our guide to app development cost explains what drives the price, and our SaaS MVP roadmap shows the full journey.
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