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Startup Genome has compiled some depressing statistics: 9 out of 10 startups fail. The reasons are different: not enough money, amateurs on the team, a wrong-headed approach to developing the idea. The money factor and cadre problems are obvious enough, but the approach takes more finesse.The choice here will determine how much money and what kind of team will be needed. There is some confusion about terms, too. Some call the first version of a product MVP, others a prototype or MVP prototype . Here we are going to clear up this messy business, explain the difference between MVP and prototypes, what kinds of prototypes exist and the purpose of MVP development for startups.
A proof of concept (POC), prototype, and MVP answer three different questions in that order — can we build it, what will it look like, and will anyone pay for it. A POC is an internal technical test that proves a specific feature or architecture is feasible; a prototype is a visual, mostly non-functional model of the finished product; an MVP is a working product with real users and real data. Confusing the three is the fastest way to burn a validation budget on the wrong artifact — a team that builds a polished prototype when they actually needed to test a shaky integration wastes weeks discovering the same blocker a two-day POC would have caught.
This guide walks through all three stages, when to use each one, and how they chain together in a real product roadmap — with a side-by-side comparison table and a decision path you can apply to your own idea.
A proof of concept is a small, throwaway technical exercise built to answer one question: is this specific thing technically possible? It's not shown to investors, it's not shown to users, and it usually isn't shown to anyone outside the engineering team.
A POC exists to de-risk the parts of a product idea that carry the most technical uncertainty before anyone commits budget to design or a prototype. Common POC scenarios at Purrweb include:
A POC typically takes 1–2 weeks and one or two engineers — far less than a prototype (design-driven, 10–200+ hours) or an MVP (full feature build, 6–12+ weeks). It produces no UI, no user flow, and often no code that survives into the next stage. The deliverable is a yes/no answer plus a short technical report, not a demo asset.
A POC is not optional just because it's cheap to skip. Teams that jump straight from idea to prototype often discover the technical blocker only after design and stakeholder buy-in are already locked in, which makes the blocker much more expensive to fix or work around.
A POC proves an idea can work technically. A prototype shows how it will look and flow. An MVP proves people will actually use it. Each stage answers a question the previous one can't, and skipping a stage just means you answer that question later, with more money already spent.
The three are also different in who sees them. A POC stays inside the engineering team. A prototype goes to investors, stakeholders, and sometimes a small test group to react to the concept. An MVP goes to real, paying or signed-up end users in the actual market.
| POC | Prototype | MVP | |
|---|---|---|---|
| Answers the question | Can this be built at all? | What will it look and feel like? | Will people actually use/pay for it? |
| What it validates | Technical feasibility of a specific feature or integration | Concept, UX flow, visual direction | Market demand, retention, willingness to pay |
| Audience | Internal engineering team | Investors, stakeholders, small test groups | Real end users in the live market |
| Functionality | Minimal — often a single script or API call, no UI | None to partial — mostly clickable mockups | Fully functional core feature set |
| Typical timeline | 1–2 weeks | 10–200+ hours depending on fidelity | 6–12+ weeks |
| Typical cost (Purrweb range) | $2,000–$8,000 | $3,000–$15,000 | $25,000–$80,000+ |
| Output | Technical report, yes/no answer | Wireframes or interactive click-through | Live product with real users and data |
| What comes next | Prototype or direct MVP build | MVP or further design iteration | Full product roadmap based on user data |
Ranges above are directional estimates based on Purrweb's own project mix; scope, region, and team seniority shift them meaningfully in either direction.
A prototype is an interactive model of a future product—a draft demonstrating potential before investors or test groups. According to industry practice, prototyping serves to:
A project manager at Purrweb notes: "Prototyping results in a raw, basic version of a product with many features missing, useful mostly to check if the concept can take off."
Wireframe sketches showing application appearance. These basic outlines help teams understand direction without impressing investors. They take 10–30 hours depending on complexity.
Advantages:
Disadvantages:
Fully designed, polished prototypes that look and feel like final products but contain no actual code. A Purrweb lead designer switched from Marvel to Figma for better image quality preservation across handoffs.
Advantages:
Disadvantages:
These upgrade interactive designs with partial real functionality, ideal when core features present technical challenges — this is where a prototype starts to overlap with what a POC should have already answered.
Advantages:
Disadvantages:
MVP (Minimum Viable Product) represents the most economical and safe way to find out the degree of demand a product will encounter from actual end users. Its core purpose involves gathering end-user feedback and adjusting technologies, business models, or other aspects at testing stages. Unlike a POC or prototype, an MVP is a real product people can actually use.
Benefits include:
A business analyst at Purrweb states: "MVP is the first combat-ready version of a program, with all tools for comfortable use and a foothold to test target audience response."
Building an MVP the right way starts with picking the smallest feature set that still delivers real value — see how to choose MVP features for the prioritization framework we use with clients.
1. Landing page: Introduces potential clients, tests pricing models, and gauges visitor interest without requiring app development
2. Concierge: Manually perform operations personally to maximize feedback before automating
3. Wizard of Oz: Manual processes through a website or application interface, allowing quick assessment of user interest and convenience. We used this for Cheflocal, a freelance-chef marketplace that used to route every order through WhatsApp before launch
4. Frankenstein: Minimal manual handling with operations routed to external services — see Grecha.pro, where restaurants link with suppliers and roughly half the processes run through the Integromat service
5. Single Feature: Tests one important, interesting function to pique client and investor interest
A global contractor payment system needed launch within two months for a Y Combinator presentation. Purrweb chose a Single Feature MVP focused on transfers, which required account creation and bank connections. This approach delivered timely results within budget constraints.
This Internet of Things project let users rent powerbanks at one subway station and return them elsewhere. Before committing to a full build, the team ran a short technical POC to confirm the Chinese hardware could actually talk to the app's IoT layer — only after that came back positive did they move to a Single Feature MVP and add more functions post-launch. Read the full breakdown in how we puzzled out the IoT hardware in a month.
| Aspect | Prototype | MVP |
|---|---|---|
| Purpose | Understand product concept and operation | Estimate competitive appeal and market demand |
| Address | Developers, QA, investors | End-users, media reviewers |
| Monetization | Appeals to crowd-funding and investors | Marketable product, potentially global reach |
| Intended Audience | Potential investors | Potential users and clients |
| When to Make | No budget for alpha; potential difficult to estimate | Risks known; market response needed |
| End Goal | Prove ROI potential for initial investment | Sell product; test scaling chances |
| Future Fate | Advances to MVP; design/functions reused | First version; tested and improved to complete product |
Most teams don't need to pick just one — the question is which one to build first, and whether to skip a stage.
Purrweb generally recommends running the POC and prototype in parallel tracks when time is tight — the design team builds screens while engineering answers the feasibility question — then converging into a single Single Feature or Wizard of Oz MVP once both have a green light.
Startups with limited resources sometimes combine both approaches. The decision depends on specific circumstances. Purrweb recommends developing both: prototypes give the company a chance to be startled by its product's shortcomings rather than startling others — and for anything with real technical risk, a short POC before either one is the cheapest insurance policy in the whole roadmap. For a broader walkthrough of MVP scoping and build patterns, see how to build an MVP app and what MVP means in software development.
Recap for teams choosing where to start
Ready to figure out which stage your idea needs first? Talk to Purrweb's MVP team about scoping a POC, prototype, or MVP sprint.
A POC tests whether a specific technical approach is feasible, a prototype shows how the product will look and flow without real functionality, and an MVP is a working product tested with real users. They answer feasibility, design, and market-demand questions respectively, usually in that order.
Only if the idea has real technical uncertainty — an unproven integration, hardware, or performance requirement. If the tech stack is standard and well understood, teams can go straight to a prototype without a separate POC.
A POC typically runs $2,000–$8,000 and takes 1–2 weeks with one or two engineers, versus $25,000–$80,000+ and 6–12+ weeks for an MVP with a full feature set. Exact figures depend on scope and team composition.
Not directly — a prototype has no real backend or data layer, so its code isn't reused as-is. What carries over is the validated UX flow and visual design, which the MVP build then implements with actual functionality.
When the concept and UX are already validated — through market research, a previous product, or founder domain expertise — and the priority is collecting real usage data rather than testing the idea's visual appeal.
Rarely. A POC is an internal engineering exercise meant to answer a yes/no feasibility question, not a demo asset. Prototypes are the artifact typically shown to investors and stakeholders.
The team either re-scopes the technical approach and runs a second POC, or the idea is adjusted to avoid the infeasible component. A failed POC is considered a success in risk-management terms — it's far cheaper than discovering the same blocker mid-MVP build.
For a straightforward B2B or consumer app: roughly 1–2 weeks for POC, 2–6 weeks for a prototype depending on fidelity, and 6–12+ weeks for the MVP — so 10–20 weeks end to end when all three stages are used.
