Prototype · to · productLondon · Working since 2019

Broken prototypeto real product,in 14 days.

You spent months in Lovable, Base44 or Replit. What came out looks right and falls over the moment someone real uses it. That is not wasted work, it is a spec. We finish it.

Taking on new builds · Currently shipping for clients in the UK and US
450+ businesses since 2019
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§ 01 · What you actually have

It is not a failed app.
It is an interactive mockup.

Five years ago you would have paid someone to write a requirements document, waited three months, and then discovered it was not what you pictured. You skipped that entirely. What is on your screen is a better spec than any document. The problem is what sits behind it.

01

No row-level security

Your database will hand any signed-in user somebody else's rows if they ask for them directly. Nothing in the interface tells you this is happening, because the interface is not where it happens.

02

No permission roles

Admin, staff and customer are the same account with different buttons hidden. Hiding a button is not a permission. Anyone who opens the network tab has the whole application.

03

Nothing protecting the money

If your app takes payment from a business and from that business's customers, the gap between those two sides is where the fraud goes. Most prototypes have no idea that gap exists.

Anyone with a Claude subscription can call themselves a developer. Almost none of them can tell you what RLS is.

Why the quote you got was so cheap
§ 02 · How it works

Five steps.
Fourteen days.

The same sequence whether you are at 90% and need the last mile, or at 40% and need most of it built properly. What changes is how long step three takes.

01

We audit what you built

You send the export. We install it, run it, and try to break it. You get the findings written up whether or not you hire us, including the parts that are genuinely well built.

Code reviewSecurityData modelWritten findings
02

Real infrastructure, under your name

Everything moves onto AWS, on accounts you own. Our own agents stand the infrastructure up from scripts we have run hundreds of times, which is why this takes hours instead of the week it used to.

AWSCI / CDEnvironmentsMonitoring
03

We close the gap

Auth, roles, row-level security, payments, the things a prototype builder could not do inside its own walls. This is the part you could not get past on your own, and it is the part that decides whether the thing is a business or a demo.

PostgresAuthStripeRLSRoles
04

Tests, on everything

Nobody on our team has hand-written a line of code in six months. They orchestrate agents and they write the tests. You are competing against people doing this alone at two in the morning. We industrialised it.

Test coverageAgent orchestrationCode review
05

You ship

Web first. Then the App Store and Google Play when you need to be a company rather than a link you text people. You own the repository, the accounts and the code from day one.

App StoreGoogle PlayHandoverSupport
450+
Clients
since 2019
5.0
Rated on Clutch
across 5 reviews
16yr
Average senior
experience
14d
Typical prototype
to real product
§ 03 · Who we have done this for

Names,
not adjectives.

Every agency says the same six things about itself. Here are the products instead. All quotes are real, verified, and published with permission.

Legal tech
LegalBuddy

Picked up after a previous freelancer left it half-finished, rebuilt properly, and shipped.

Hospitality
Hive AI

Hospitality intelligence platform, built end to end.

Education
SecureEDU

K-12 cybersecurity SaaS, where getting permissions right was the whole product.

Retail data
Daltix

Reporting built to be understood, not just delivered.

Professional services
Archer

Data work at a scale where the relationships mattered more than the charts.

Consumer
Yoke

Dashboards their own clients see, so the bar was somebody else's brand.

The final result exceeded every expectation we had. They brought a rare combination of technical excellence, creative intuition, and proactive communication that made them an invaluable part of our launch.

Chris Heeb

Chris Heeb

LegalBuddy

The most important thing I can say is that they truly understand data and data relationships. On top of that, they consistently exceed expectations on communications, delivery, and value. The force is strong with this team.

Leonard Chamberlin

Leonard Chamberlin

Archer

They have the experience to understand what a client wants, propose the best option, explain the trade-offs, and then deliver reports that exceed expectations. Hope to work together again soon.

Nick Croukamp

Nick Croukamp

Daltix

He understood our business quickly and turned our data into dashboards that are insightful and easy to use. Fast turnaround, communication on point, and the end product exceeded expectations.

Brian Ahern

Brian Ahern

Graystone

5.0 on Clutch, across every review.

Clutch verifies each reviewer by phone before a word gets published, so these are not testimonials we collected ourselves.

  • Quality5.0
  • Schedule5.0
  • Cost5.0
  • Willing to refer5.0
Verified

The Data Family's responsiveness to edits needed is impressive.

Michael Estrada

Michael Estrada

Founder, SecureEDU

Software development · Cybersecurity

React, Node.js, AWS · Ongoing since June 2025

Verified

The Data Family is very knowledgeable and easy to work with.

Angela Finlay

Angela Finlay

CEO, Windward Human Capital Management

Web app development · Consulting

Built from an outline she made in Claude

Verified

The overall experience was one of genuine collaboration rather than simple task execution.

Pavel Reppo

Pavel Reppo

Executive Director, Finemind

Analytics product · Non-profit

Multi-dashboard suite used in funder conversations

Verified

The Data Family's backend data scientists are particularly talented.

David Atkins

David Atkins

Co-Founder & CEO, Yardstick

BI infrastructure · Consumer services

Snowflake warehouse into Power BI · $10k to $49k

Verified

very helpful as a first-time business builder

Stephen Benjamin

Stephen Benjamin

Northeast Development Insights

Intelligence platform · Real estate

Scrapers and repository · $10k to $49k

5verified reviews,
in full, on Clutch
§ 04 · What it costs

Priced off
what is missing.

We work out how far you actually are from production grade, then price the gap. Not your budget, not how excited you sound on the call. The audit produces the number, which is why we do the audit first.

Over 80% built
From$2,500

The last mile. You have something that works for you and falls apart for anyone else.

  • Security and permission model
  • Infrastructure and deploy
  • Test coverage
  • Handover
50 to 80% built
From$5,000

Real gaps in the middle. The front end is largely right, most of what should sit behind it is not there yet.

  • Everything in the first tier
  • Backend and data model rebuild
  • Payments and integrations
  • App Store and Google Play
Under 50% built
 Scoped

Effectively a rebuild with your prototype as the specification. We will tell you that on the call rather than quote you a number that cannot hold.

  • Full build from your prototype
  • Fixed scope agreed before we start
  • Weekly demos
  • Support after launch

We do not take work under $2,500. If that is not where you are, we will say so on the first call rather than pad a quote to fit. Worth being straight about the other side of it too: five years ago this was a $50,000 build and six months of your life. It is not that anymore. It is a ten times improvement, not a hundred times one. If you are looking for a $200 app, we are the wrong people and we would rather you found that out now.

  • 01

    We do this every day

    Nobody on our team has hand-written a line of code in six months. They orchestrate agents, they write tests, and they check the output. The person you are competing with for your own product is you, at midnight, with no tests.

  • 02

    The whole stack, one team

    The people fixing your application are the people who built the database underneath it and set up the infrastructure it runs on. Nothing gets passed between three suppliers, and nothing falls in the gap between them.

  • 03

    Senior by default, not by upsell

    The person who scopes your project reviews the code. Backgrounds include BCG, Booking.com, where our founder ran a ten-engineer data and AI team, SWIFT, and Antler. No pyramid of juniors behind the first call.

  • 04

    You own all of it

    The repository, the AWS accounts, the domains, the code. From day one, in your name, not ours. Nobody can hold your product hostage later, including us. That is the point.

  • 05

    We are still here after launch

    Most people ship and disappear. We stay on retainer or on call, train whoever you hire next, and fix the thing that breaks at eleven on a Thursday night. Six years of this and almost nobody has left.

§ 06 · The rest of it

We did not start
with apps.

Half our work is still the thing we opened the doors doing in 2019. If you came here for data rather than a prototype, these are yours.

§ A

Conversational BI

Your team asks a question in plain English and gets the right number back. A semantic layer over your data, installed in two weeks.

Talk to us
§ B

Data engineering

Pipelines, warehousing and modelling, so that everything downstream of them is worth trusting.

Talk to us
§ C

Analytics and dashboards

Where we started. Power BI, Tableau and custom builds that people open on a Tuesday morning without being asked to.

Talk to us
§ D

AI strategy

Before you hire a team, hire a day of our time. What to build, what to buy, and what to skip entirely.

Talk to us
§ 07 · Fair questions

Before you
book anything.

The things people ask on the first call, answered here so the call can be about your product instead.

No, and it is not unusual. Almost everything that reaches us is held together with patches from six weeks of fixing one thing and breaking another. What matters is that the screens show us what you want. That is worth more than a written brief, because a brief is somebody's guess at what you meant and your prototype is the actual answer.

Depends what the audit finds, and we will tell you honestly. Front-end work is usually worth keeping. Anything touching auth, permissions or payments usually is not, because prototype builders cannot express those properly inside their own limits. Where something you built is genuinely good, we say so and keep it.

Yes, all of it, from the first commit. The repository is yours, the AWS accounts are in your name, and the domains are registered to you. If you want to take it in house or hand it to somebody else in a year, there is nothing to negotiate and no one to ask.

Row-level security. It is the rule that stops one customer's records being readable by another customer, enforced at the database rather than in the interface. Prototype builders very often skip it, because the app looks completely correct without it. It only shows up when you have two real users, and by then it is a breach rather than a bug.

Yes, Apple and Google both. It is a common ask, because for most people that is the moment the thing stops being a project and starts being a company. Worth knowing that store review timing is not in anybody's control, so we treat it as its own stage rather than folding it into the fourteen days.

Usually because they are doing what you already did, faster. It will look correct and there will be nothing behind it, which is the exact position you are in now, minus the money. Ask whoever quoted you how they handle row-level security and role permissions. The answer tells you everything, and it costs you one message.

For the first two tiers, yes, and it is realistic because you already did the hard part. Design decisions, screen flow and feature scope are settled and sitting in your prototype. We are not discovering what you want, we are building what is already on the screen. If your scope does not fit fourteen days, we will say the number out loud before you commit to anything.

Book thirty minutes. Bring what you built, or a link to it. We go through the stack, the data, the permissions and what breaks, and you leave with an honest read on how far along you are even if you never speak to us again. If it is a fit, the written audit follows and the scope comes with it.

§ 08 · Let us look at it

Show us
what you
built.

Thirty minutes with someone who will open your code, not a salesperson with a deck. We tell you how far along you actually are, what is missing, and what it would take. If we are not the right people, we say that too.