We publish a fee for every first step, and a typical price band for each kind of build.
Most Quantum Craft engagements start with one of these four steps. A focused MVP typically costs £35,000 to £80,000 over 6 to 12 weeks.
Last checked . The first-step fees are the ones we quote today, and the build bands are the ones each case study publishes, at London rates as of mid-2026.
Pick the one that fits the decision in front of you. The audit and the sprint have fixed fees. The assessment and the technical due diligence start from a figure, because how much ground they cover varies. We fix the exact fee for those two in writing after the first call, before any work starts.
The four first steps by fee, each bar drawn from zero, lowest first. A dashed tail means the fee starts from that figure or comes in more than one size.
£4,500 or £8,500
One week for a single workflow, two for a platform
Anyone about to commission a build: every build we take on starts here.
From £4,950
One to two weeks
From £4,950 covers a single department or workflow. A whole business costs more.
UK companies that suspect AI could help, but not where or what it would be worth.
What each first step ends in: three of the four end in a report (AI readiness assessment, AI-built app audit and Technical due diligence), and the specification sprint ends in the written specification. Every first step ends in something you keep.
£3,500, fixed
About a week
Founders whose Lovable, Bolt.new, Replit or v0 app now handles money, health data or customer records.
From £6,500
One to two weeks
The final fee depends on how much ground the review covers.
Investors and acquirers, and founders who want the problems found while there is still time to fix them. Score your company before an investor does.
The first applies to every first step. The second belongs to the AI-built app audit.
The first-step credit, in order. If you go ahead with the next stage within 30 days, the fee for your first step comes off its price. Highlighted station: the first-step fee coming off.
If you go ahead with the next stage within 30 days, the fee for your first step comes off its price. The next stage is the work we quote you after the first step, such as the build after a specification sprint or the fixes after an audit.
If nothing needs fixing before you take payments, we say so and sell you nothing else.
After the specification, a build is quoted from it. These are the shapes we have built, with the band each one's case study publishes for work of that shape.
Every published band on one linear scale from zero, numbered in the key. Highlighted: the single-workflow MVP, the band this page leads with.
| Shape | Example engagement and its scope | Time | Indicative band |
|---|---|---|---|
| Single-workflow MVP | One workflow built to production standard. The bottom of the band has one user type and no integrations; the top adds payments, an admin surface and a second audience | 6 to 12 weeks | £35,000 to £80,000 |
| Practice platform | Karu: scheduling, records, notes and video | About 14 weeks of core build | £90,000 to £140,000 for this phase |
| Subscription learning platform | Treble: student web app, authoring studio with playable notation, marking engine and Stripe billing | Four phases | £110,000 to £175,000 |
| Two-sided marketplace | A B2B logistics marketplace: the first transactable phase | Phase one of a multi-year programme | £125,000 to £170,000 |
| Field-service compliance platform | BlueWave: web app, offline mobile app, scheduling and billing | About 14 weeks of core build to first release | £150,000 to £250,000 to first release |
| Platform with native apps and payments | NForge: web and native mobile apps, Stripe Connect payments and live video | 30 to 40 weeks | £260,000 to £340,000 |
| Data platform programme | TIYO: a crawl engine, an event store, analytics and several products | Two to three years | £350,000 to £550,000 across the programme |
All bands exclude costs paid to third parties such as hosting and infrastructure, at London rates as of mid-2026. They are bands for the shape, not an invoice: your figure comes from the specification. Once the product is live, plan for 20 to 30 per cent of the build cost a year to run it and keep changing it.
Pricing follows how well the work is understood before it starts.
The three ways we price work, set along a project from a problem that is still moving to a product that is live.
How Quantum Craft engagements are priced
Model
Model
Model
Any change of scope is agreed in writing before the work changes.
A first step, in the order the promises below give it: a free first call, then a first step at a published fee that is fixed in writing before any work starts and does not move with what the work finds, and what it produced is yours to keep. Highlighted station: the first step.
A single-workflow app built to production standard typically costs £35,000 to £80,000 over 6 to 12 weeks. Larger platforms cost more, and the build bands on this page give the band for each shape we have built. The bands leave out costs paid to third parties, such as hosting and infrastructure. Every build starts with a specification sprint, at £4,500 for one week or £8,500 for two, and is quoted from the specification it produces.
So you can judge whether a first step is worth a call before you make one. A fee that is published cannot bend to fit what the work turns up, and every case study publishes the band for its own shape.
Two first steps start from a figure. From £4,950 covers an AI readiness assessment of a single department or workflow, and a whole business costs more. Technical due diligence starts from £6,500, and its final fee depends on how much ground the review covers.
Yes. If you go ahead with the next stage within 30 days, the fee for your first step comes off its price. That applies to all four first steps.
The audit fee, £3,500, is fixed before the audit starts and does not change with what it finds. If nothing needs fixing before you take payments, we say so and sell you nothing else.
Yes. Every first step ends in something you keep, a specification or a report, and nothing in it commits you to the next stage. Each later stage is priced in writing before it starts.
Plan for 20 to 30 per cent of the build cost a year to run the product and keep changing it, on top of hosting and other third-party costs. Ongoing work is priced in writing before it starts, like every other stage.
Tell us about a product you want built, or a decision about AI you need to make, and we'll set up a 30-minute call. You'll get a straight answer on what it would take.
We reply within one working day
By email, to arrange a time for the call.
A free 30-minute call
With a senior engineer, about what you are building or deciding.
The fee in writing first
If a first step is worth taking, you get its exact fee in writing before any work starts.