MVP development: how to launch
fast and spend less
Short answer: An MVP is the smallest working product that validates your core assumption. In the UK, a well-scoped MVP costs £8,000–£25,000 and takes 8–14 weeks. The mistake most founders make is building too much — not too little.
What is an MVP — and what it isn't
An MVP is:
- A functioning product real users can use
- Built to solve one core problem well
- Designed to generate real feedback data
- The foundation you build V2 on top of
- Finished — not buggy, not embarrassing
An MVP is NOT:
- A wireframe or Figma prototype
- A half-built product you promise to finish later
- The full product with a few features disabled
- Your complete vision built cheaply and quickly
- An excuse to ship poor quality work
How to scope your MVP
Define the core problem in one sentence
Write: "My product helps [who] to [do what] so that [outcome]." If you can't write this, you're not ready to build. Everything in the MVP must serve this statement directly.
List your features — then cut them in half
Write every feature you want. Then ask for each one: "Does a user fail to get value from the product if this is missing?" If the honest answer is no, it goes in V2. Be ruthless. Most MVPs are still over-scoped after this exercise.
Define your single success metric
Before build starts, define: what is success after 3 months? User retention rate? Monthly revenue? Session length? Activation rate? Write it down. Your MVP's job is to answer this one question with data.
Choose the right platform for V1
Web app first for B2B tools, internal tools, dashboards. Mobile first for consumer products that need push notifications, camera/GPS, or offline use. Don't build both for an MVP — nearly always a budget mistake.
Insist on a fixed-scope proposal
Don't sign an hourly contract for an MVP. A good agency can scope a well-defined MVP to a fixed price. This forces both sides to think requirements through — and protects your budget from uncontrolled scope expansion.
Ship, measure, iterate
Launch to a small real user group. Measure your V1 success metric honestly. The MVP's data tells you where to invest in V2 — not your assumptions from before you built it.
What belongs in an MVP?
Almost always included
- User registration + login + password reset
- The single core feature (the "why" of the product)
- Basic notifications (email or push)
- Usage tracking (so you have data)
- Payment processing (if monetisation is the core test)
- Basic responsive design (mobile-aware)
Almost always cut to V2
- Advanced filtering and sorting
- User profiles with rich customisation
- Social features (sharing, comments, likes)
- Admin dashboard (unless the product is B2B SaaS)
- Complex subscription tiers
- Third-party integrations beyond payment (unless core)
- In-app chat or messaging
- Referral / invite system
What does an MVP cost in the UK?
| MVP Type | UK Cost Range | Timeline | Example |
|---|---|---|---|
| Simple web app MVP | £8,000–£15,000 | 8–10 weeks | Booking app, internal tool, simple SaaS dashboard |
| Mobile app MVP (cross-platform) | £12,000–£22,000 | 10–14 weeks | Fitness app, delivery tracking, consumer marketplace |
| Web + mobile MVP (both platforms) | £18,000–£30,000 | 14–20 weeks | Two-sided marketplace, platform with companion app |
| Complex MVP (payments, maps, integrations) | £20,000–£40,000 | 14–20 weeks | Fintech MVP, logistics platform, healthcare scheduling |
Common questions
Can I build an MVP myself without a budget?
Yes — if you or your co-founder are technical. Use no-code tools (Bubble, Glide, Webflow) to validate before writing a line of custom code. If your idea can be proven with a no-code MVP, do it. Custom code should come after your core assumptions are validated.
How long does MVP development take?
A properly scoped MVP takes 8–14 weeks. Discovery + design: 2–3 weeks. Development: 4–8 weeks. QA + launch: 1–2 weeks. Agencies promising a 3-week MVP are usually cutting scope, QA or both.
Should I use React Native or Flutter for a mobile MVP?
Either works well for MVPs. React Native is a better choice if you already have a React web app or expect to hire JS developers. Flutter delivers slightly more native performance and is often preferred for complex UI. Both deploy to iOS and Android from a single codebase. See our full comparison →
Do I need an MVP or can we go straight to the full product?
Go straight to the full product only if: (a) you have a paying customer with a signed contract, (b) you've built and validated this type of product before, or (c) your product is a replacement for existing software with known requirements. In all other cases, start with an MVP — it will save money and reduce risk.
Continue planning your project
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