Web, AI and business analysis studio. French Riviera, Monaco, Paris and remote
Websites, applications and AI assistants that do the work for you.
Donnée designs and delivers the digital tools of businesses on the French Riviera, in Monaco and in Paris. A fixed price in writing before day one, a first demo within 48 hours, code that is delivered, documented and yours.
Describe your project, or ask your questionScripted demo
This assistant knows the studio, the timelines and the rates. It answers you, prices your project and passes your request on, with no phone call needed.
Online brief in 3 minuteswritten reply within 24 hours on weekdays
Fixed price, in writingno surprises on the invoice
Demo within 48 hthen one a week until delivery
Studio availability30 % of capacity booked over the next 4 weeks
15 free hours per weekNext slot for a new project: Fully booked for now, waiting list open
01Sectors
For your trade
Six sectors we know from the inside, with what works and what it costs.
A law firm's website and a yachting store do not have the same customers, nor the same obligations. Each page below describes the tools useful to your sector, starting prices, and the questions we are asked most often.
Three minutes, no phone call. An immediate estimate, then a written reply within 24 hours.
This brief stands in for the first meeting. It asks the questions we would ask, works out a range from our actual rates and reaches us with everything needed to answer you precisely.
03Services
What we build
Seven areas, one point of contact, and a written starting price for each.
An assistant that answers accurately, a website that earns trust, an application that holds under load, figures you can decide on. We start from the question with a number in it and deliver something in production that you can grow without depending on us.
AI assistants and automation
An assistant that reads your documents, answers your customers, acts inside your tools and knows how to say “I don't know”.
from2 950 €
Customer assistant on your website: answers, qualification, appointment booking
Internal assistant: search across your documents, procedures, knowledge base (RAG)
ToolsNext.js 15, TypeScript, Postgres, Drizzle, Stripe, Resend, Supabase Learn more
Data, dashboards and forecasting
Your figures brought together, up to date, with the forecasts that let you plan ahead.
from3 250 €
Dashboards connected to your tools: sales, cash, margins, activity
Forecasting sales, demand, lead times, cash flow
Scoring and classification: customers, documents, tickets, risks
Anomaly detection in your flows
Data pipelines, open data, maps (PostGIS)
Statistical validation before anything goes to production
ToolsPostgres, PostGIS, TypeScript, MapLibre, model APIs Learn more
Business analysis and scoping
Understand before you build: economics, margins, processes, contracts. The scoping that saves you paying twice.
from1 650 €
Business diagnosis: margins per product, costs, cash, seasonality
Scoping a digital project: perimeter, priorities, expected return, phased plan
Mapping processes and automatable tasks
Market and competitor study from open data
Legal framework of digital tools: GDPR, legal notices, terms of sale, compliant AI assistants
Written, quantified, actionable report in one to two weeks
ToolsINSEE, SIRENE, DVF, open data, spreadsheets, Postgres Learn more
Support, rescue and security
Hacked site, vanished provider, code nobody dares touch: we take over, stabilise and secure it.
from1 000 €
Taking over an abandoned site or application
Cleanup after a hack, hardening, backups
Monthly maintenance: updates, monitoring, fixes
Performance, GDPR, hosting migration
On-call for systems that run continuously
ToolsWordPress, PHP, MariaDB, Next.js, OVH, VPS, Docker Learn more
Online payments and providers
Take payments on your site when Stripe refuses or closes the account: the right provider for your business, integrated, with a fallback.
from1 300 €
Provider chosen for your activity: CBD, wine and spirits, e-liquids, food supplements, adult products, regulated services
Integration of PayZen, Systempay, Monetico, Mollie or Stripe: payment, refunds, notifications, unpaid follow-up
Application file prepared with you: company registration, certificates, terms of sale, product list, your bank's distance-selling contract
Fallback provider configured: if the main one cuts you off, the store keeps taking payments
Subscriptions, instalments, PDF invoices and receipts
Migration from a closed account without losing orders in progress
ToolsPayZen, Systempay, Monetico, Mollie, Stripe, Supabase, webhooks Learn more
04AI assistants
AI assistants
A useful assistant knows your data, can act inside your tools and knows when to hand over.
This one knows the site. Ask it about the studio, the offers or the rates: it answers in a few lines and takes you to the right place. No server, no cookie, no key.
Guide · this site
Hello. I know this site by heart. Pick a question and I will show you where to look.
Five steps, always the same. You know at any moment where the project stands and what remains to pay.
Day 0 to 1
Brief
You describe the project online, the assistant or the form estimates it, we reply in writing within 24 hours. A video call afterwards, if you want one.
What you do
Describe the project online, three minutes, no call
Answer two or three precise questions in writing
What we do
An immediate range, then a fixed price in writing within 24 h
A dated scope, line by line, with no commitment
You leave with: a firm quote and a delivery date.
Week 1 to N
Build
A demo every week, on a real address. A decision log: what we chose, what we rejected, why.
What you do
Watch the weekly demo, on a real address
Settle open questions, in one sentence
What we do
Build in deliverable slices, never as a black box
Keep a decision log: chosen, rejected, why
You leave with: a live version that grows every week.
Go-live day
Delivery
The code, the documentation, a handover session and the honest list of what remains open.
What you do
Sit through the handover session, one hour
Check the acceptance list with us
What we do
Deliver the code, the documentation and the accounts in your name
Put it live, watch the first hours
You leave with: a tool in production and its manual.
48 hours later
Review
Within 48 hours: measured results, what took longer than planned, what you can reuse elsewhere.
What you do
Read the written review, ask your questions
What we do
Measure: speed, errors, first usage
Say what took longer than planned, and why
You leave with: figures, not impressions.
Then, monthly
Support
Maintenance, improvements, on-call if the system runs continuously.
What you do
Write when something changes, or do nothing at all
What we do
Updates, backups, monitoring, fixes
One-off interventions from two hours
You leave with: a system that runs without calling you.
01 / 05Pick a step to see what happens there.
06Rates and estimate
Formats and rates
Three ways to work together. One day rate for everyone, and every quote written before the first day of work.
Fixed price
Written scope, fixed price, delivery date. For a site, an application or a first assistant.
On quote, estimate below
Day rate
One or more days a week, on your backlog, with your team.
650 € per day
Maintenance
Monthly subscription: updates, backups, monitoring, fixes and small changes. Outside a subscription, a one-off intervention starts at two hours.
from €175 a monthone-off intervention from 2 h, 108 € an hour
Quick estimate650 € / d · 108 € / h
07Studio
The studio
Donnée, on the French Riviera and remote. Small by choice, direct on principle.
You speak to the people who build, not to a project manager passing messages along. The studio brings together three trades rarely found in the same room: development, applied artificial intelligence and economic analysis. Its founder ran a web agency before returning to code, after studying economics and law. That is what makes it possible to scope a project, price it, read a contract, and say no when a tool will not earn what it costs.
We ship code we can explain line by line, and we would rather say "this will take three more weeks" than let you find out at delivery.
AreaFrench Riviera, Monaco, Paris, all of France remotely
Remote across France and Europe, on site on the French Riviera and in Monaco.
Our clients are in Nice, Monaco, Cannes, Antibes, Sophia Antipolis and Paris, and among the English speakers who have settled on the Riviera. Everything starts with a written brief, online. The rest happens in writing, on video or in person, whichever you prefer.
