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MVP Sprint

The MVP Sprint is the productized version of our MVP service: a strategy-led, lean SaaS MVP delivered in a fixed 8–12 weeks window, for a fixed scope and a fixed price of from £30,000.

It exists for founders who want certainty. You agree the scope and the number before the work starts, and one team carries the product from strategy through launch — strategy, UX, and full-stack engineering in a single delivery workflow.

The Sprint is deliberately narrow. It builds the one workflow that answers your most important validation question, and nothing that does not move that answer forward. If you need an open-scope engagement instead, our MVP development service covers larger builds.

  • Fixed scope and fixed price agreed before the build begins
  • Strategy and scope workshop to lock the core workflow
  • UX wireframes and prototype validation for the primary user flow
  • Full-stack build with only the integrations needed to launch
  • Production launch plus a 30-day post-launch support window
Founder team scoping a fixed-price SaaS MVP Sprint
A fixed window, six clear phases

Every Sprint runs through the same six phases, so the scope stays disciplined and the launch date stays real.

06
01

Strategy & Scope Workshop

We define the core user, the single workflow, and the validation question — then fix the scope.

02

UX Wireframes

We map and prototype the shortest path to first value before any production code is written.

03

Core Build

Front-end, back-end, and data layer are built around the agreed core workflow only.

04

Integrations

Authentication, billing, and notifications are added only where they unblock the launch.

05

QA

We test core flows, device behaviour, and launch blockers before the product goes live.

06

Launch + 30-Day Support

We ship to production, then stabilise the release and review early signals over 30 days.

Fixed scope, no scope creep

The scope is locked in the workshop, so the build stays focused and the launch date holds.

One team, strategy to launch

Strategy, UX, and engineering sit in one workflow, so product decisions stay aligned throughout.

Value-based fixed price

You agree the price up front. No hourly meters, no open-ended estimates, no surprise invoices.

Built to validate, not to bloat

Every feature is measured against one validation question, so the first release stays lean.

MVP Sprint delivery dashboard showing a fixed timeline and launch progress

A fixed window, a fixed price, and a launch built for real validation rather than a feature list that delays the release.

8-12

Weeks from the strategy workshop to a launched, production-ready first release.

£30k

Fixed price from from £30,000, agreed up front against an agreed, locked scope.

30d

Post-launch support to stabilise the release and review early product signals.

Investment

The MVP Sprint: from £30,000, fixed

The MVP Sprint is priced as a product, not a project. The investment starts from £30,000 for a fixed scope delivered in 8–12 weeks. You agree the scope and the number in the strategy workshop, and that number does not move unless you choose to add scope through a separate phase.

The price is value-based and tiered to the complexity of the core workflow. A single clean workflow with managed third-party services sits at the entry tier; a workflow with more data branches or heavier integration work sits higher. Either way you know the figure before the build begins, which is the whole point of a productized offer.

If your product is bigger than a single Sprint, we are honest about it. We start with the highest-leverage slice, then plan the next phase through our open-scope MVP development service. Teams that are still narrowing what to build often begin with a strategy engagement first. If you are moving off a no-code tool, the path from prototype to a custom build is covered in our guide on going from no-code to custom SaaS.

  • In scope: strategy and scope workshop, UX wireframes, full-stack core build
  • In scope: launch integrations, QA, production deployment, 30-day support
  • Out of scope: multi-persona support and broad role coverage at launch
  • Out of scope: advanced admin tooling and edge-case workflows
  • Out of scope: non-essential integrations that do not unblock validation
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FAQ

Common questions about the MVP Sprint

The MVP Sprint is a productized, fixed-scope SaaS MVP delivered in an 8–12 week window for a fixed price. One Celvix team handles strategy, UX, and full-stack build, so you launch a lean, validation-focused first version without coordinating separate vendors.

The MVP Sprint starts from £30,000 for a fixed scope delivered in 8–12 weeks. Pricing is value-based and tiered: you agree the scope and the number up front, so there are no hourly meters or open-ended estimates. The fixed price covers strategy, UX, the core build, required integrations, QA, launch, and 30 days of post-launch support.

Included: a strategy and scope workshop, UX wireframes for the core flow, full-stack development of one validated workflow, the integrations needed to launch, QA, production deployment, and 30 days of post-launch support. Out of scope: multi-persona support, advanced admin tooling, edge-case workflows, and non-essential integrations — those belong in a later phase, not the Sprint.

A normal agency build is usually open-scope and time-and-materials, so the timeline and cost move as the project does. The MVP Sprint fixes the scope, the price, and the window before work starts. One team owns strategy through launch via our MVP development service, and every decision is measured against a single validation question rather than feature completeness.

If your scope is larger than a single Sprint, we split it. The Sprint delivers the highest-leverage validation slice first, then we plan the next phase through our open-scope MVP development engagement. Some products start with a strategy engagement to narrow scope before a Sprint is the right fit.

The Sprint is for founders and SaaS teams with a sharp, single-workflow product idea who want a fixed price and a fixed date. It is not for products that need broad multi-persona coverage, heavy compliance work, or an unbounded scope at launch — those are better served by an open-scope engagement.
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