MVP development for startups, fast and with AI at every step
You have
A product to build, funding or first customers, and a date when users must see it. No team to build it yet.
You worry about
- Missing the date your users or investors expect
- Paying for months before anything works
- A first version that breaks when users come
- An AI feature that works only in the demo
- Code you cannot take to your own team later
- No one to fix things after launch
- Hiring a team before you know what to build
We give you
A partner who builds your MVP
A senior engineer who writes code, with engineers we trained
Step 1before development
A clickable prototype and a written plan with the date and a fixed price. The plan is yours.
Step 2, if you continuefixed price
- Builds your first version with AI at every step
- Shows you working software at each step of the plan
- Stays with you after launch if you wantPart of the monthly work after launch. The hours it includes and its price are in our written offer before it starts. If a month needs more, we tell you first, and you decide.
You get
- Your first version in front of users
- A product that keeps working when users come
- The code and the documents are yours
- The 30-minute call is free
- You can stop after the first step
- Nothing starts until you say yes
How it works
You have a product to build and a date when users must see it, but no team yet. We give you a partner who writes code and leads engineers we trained. They build your first version with AI at every step, with tools such as Claude Code, Cursor and v0, and an engineer checks every change.
It starts with a prototype and a written plan. Before development starts, you click through the main screens and read what the first version will do, what it will not do, the date and a fixed price.
Then we build it and show you working software at each step of the plan. After launch, you can keep the team every month or take the code and the documents to your own people.
This is for you if
- You have funding or first customers, and the product has to reach users soon.
- You need a team now, without hiring one first.
- Your product uses AI: an assistant, an agent, or search over your own data.
- You want the first version to keep working when users come.
- You want to own the code and take it to your own team later.
How we work
From the first call to the product in front of your users.
- 01
A call with a partner
30 minutes, free. You tell us about the product and its users. We tell you how we would build it.
- 02
A prototype and a written plan
Before development starts, we agree a clickable prototype of the main screens and a written plan of the first version: what it does, what it does not do, the date and a fixed price.
- 03
The build
A partner leads and writes code with engineers we trained. AI writes the code against the written plan, and an engineer checks every change. You see working software at each step of the plan.
- 04
Launch
We put the first version in front of your users.
- 05
After launchPart of the monthly work after launch. The hours it includes and its price are in our written offer before it starts. If a month needs more, we tell you first, and you decide.
You keep the team every month, or you take the code and the documents to your own people.
Why we build fast, and why it keeps working
AI at every step, not only in the code
Requirements, screens, design, code, tests, review, documents and servers. An engineer checks every result.
A written plan before the code
Our method, spex, puts what to build in writing first. AI builds against it, and engineers check the result. It is written for engineers and AI tools, so you do not need to read it yourself: spex on GitHub
Engineers who already work this way
We teach our engineers our stack, AI tools and our own methods. A candidate who can only code by hand does not join.
We start fast
Usually the next working day after we agree, and within a week at the latest.
The partner who builds writes code
The partner who leads your work writes code and takes a share of that project's profit. Nobody sits between you and the engineer.
Built by people who ran large systems
Our senior partners spent 20+ years in large companies, with teams of up to 50 engineers. Your first version gets automated tests and automated releases from day one.
AI products we build
Assistants
For onboarding, support and sales, in a chat or on the phone.
Agents
Programs that do work across your tools, by rules you set.
Search over your data
Answers from your own documents and data.
Voice
Voice assistants that notice pauses and switch to the caller's language.
We run AI products of our own. ExoChat, our engine for AI assistants, keeps the model's behaviour stable, tests it automatically and records every step. Stamina, our AI companion for mental health, runs in production under strict safety rules.
What we do not do
These rules keep your product yours.
We do not take your code from you
The code lives in an account under your name, so you keep it if a server fails or you change teams.
We do not keep your code
When the work ends, we delete our copy and ask you to remove our access.
We do not start without a written plan
You see what the first version does, the date and the price before development starts.
We do not change the price on the way
The first version has a fixed price. If you want more than the plan, we tell you the price first, and you decide.
We do not own your product
The idea, the users and the money it makes are yours. You decide what it does.
We do not make you depend on us
After launch, you can keep us every month or take the code and the documents to your own team.
What we have built
A few of our 35+ projects. Client names stay private.
- Nine of our engineers built a subscription streaming platform in nine months: about 314,000 lines of code in 35+ repositories, built spec-first with AI tools.
- We built voice-first and gamified social networks across mobile, web and Telegram. Voice social network
- We built an AI voice assistant for a VoIP provider that handles sales and support calls. Voice assistant
Questions before you book
- Will you sign an NDA?
- Yes, before we see anything. You can send yours or use ours.
- Who will I sign the contract with?
- With one of the companies in our group. We have several, and we choose the one that suits you best. We work in English.
- Who owns the code?
- You do.
- How soon can you start?
- Usually the next working day after we agree, and within a week at the latest.
- Where are you?
- We are a partnership of 100+ developers in 20+ countries. We work with clients in the US and Europe.
- How long does an MVP take?
- It depends on what the first version must do. We name the date in the written plan before development starts.
- What does it cost?
- A fixed price for the first version, written in the plan before we start.
Talk to the partner who would build it
A 30-minute call about your product, without a sales presentation. Tell us what you want to build, for whom and by when. After the call, you will know how we would build the first version.