Working hours that overlap
We work your afternoon as our evening, with a written update waiting when you start the next day.
Founder-led product engineering · France
A production MVP without the Paris agency day rate
French agencies bill €500 to €800 per developer day, and a first version typically lands between €15,000 and €35,000. HyperBrain Labs builds production MVPs from $3,999, with selected clearly scoped builds launching in about 21 days.
Production proof
Shipped products, not a portfolio of concepts
$3,999
Production MVP starting price
~21 days
for selected, clearly scoped builds
50,000+
users on Offline by Happy Hour
20+ cities
served before its national-TV pitch
The comparison
What a French agency quote usually includes
Same scope, three different ways to buy it. The first column is usually the quote you already have.
French agency
€15,000–35,000
- Timeline
- 3–6 months
- Ownership
- Agency owns the process
Freelancer
Low, but variable
- Timeline
- Unpredictable
- Ownership
- Risk of mid-build handover
HyperBrain Labs
From $3,999 (≈ €3,700)
- Timeline
- ~21 days when scoped
- Ownership
- You own the code
Production MVPs start at $3,999 (about €3,700) Against a €15,000 to €35,000 French agency quote for comparable scope.
How we work with you
Fast feedback without the agency theatrics
Click on day one
You react to a working surface immediately. We do not disappear for two weeks and return with a polished misunderstanding.
Loom every 48 hours
Two minutes: what changed, what is next, what is blocked, and what decision we need from you.
Bad news first
If scope, timing, or technology is at risk, you hear it early with a plan and a clear commercial impact.
Production scope
What a $3,999 MVP can include
Scoping and written product plan
Core user flows and interface
Frontend and backend development
Database and authentication
Payment integration where required
Admin or operations panel
Production deployment
Code, account, and infrastructure ownership
Technical documentation and handover
Two weeks of fixes after delivery
The limit is scope
Not every product fits a 21-day build
We do not squeeze a large roadmap into an unsafe deadline. Larger mobile apps, SaaS platforms, and custom systems get a fixed written quote and a milestone plan. Scope changes are priced before we build them.
Selected work
Concrete outcomes from shipped products
Offline by Happy Hour
Built to 50,000+ users across 20+ cities before its Shark Tank India Season 5 pitch.
Read case study →
KrutAI
Cut a 30-minute workflow to 30 seconds and lifted conversion by 40%.
Read case study →
A2A Point
Delivered in 3 days and helped the team process leads 3 times faster.
Read case study →
Loopwave
A sellable shared WhatsApp inbox backed by 110 passing API tests.
Read case study →
FAQ
France MVP development questions
How much does MVP development cost in France?+
French agencies bill roughly €500 to €800 per developer day, which puts a first version between €15,000 and €35,000. A clearly scoped Production MVP with us starts at $3,999. Larger products receive a fixed written quote after scoping.
Do you work in French?+
Delivery, documentation and handover are in English. The product itself can ship in French, including copy, formatting and locale handling, scoped during the build.
Do I own the source code?+
Yes. You own the code, repository, infrastructure, and accounts. We include documentation, handover, and two weeks of fixes after delivery.
Bring the product idea or the broken build
We will tell you what version one should include, what to cut, and whether the $3,999 Production MVP scope is the right fit.
Talk to the founder Further reading
Before you decide
What an MVP costs in 2026
Fixed prices explained, the six cost drivers, and what a $3,999 scope does not cover.
How to rebuild an AI-generated app after it breaks
If you already have a half-built app, start here before commissioning a rewrite.