+ BUILDER CRÉATIF — MOBILE APP AGENCY
Your mobile app,
shipped. Not quoted.
We design, build and publish your iOS + Android app. In production in six weeks, with a result you can count: what it earns you, or what it saves you. One point of contact, a firm price, a date.
10 years of apps in production · 500k+ users · 4.8★ across 11,000 reviews · Renault Digital, La Poste, Pierre & Vacances
meetings, two teams, one delivery at the end — if it holds
a testable build in your phone every week
The gap isn't a team running faster: a fleet of agents writes the repetitive code, the tests and the foundation, under architecture rules the project cannot bypass. Reviewed, tested, without the debt that usually comes with it.
ALREADY DONE Strive — full social network shipped in 60 days
4.8/5
across 11,000 Evolum reviews
0 → €120k
monthly revenue, no raise
500k+
users across all apps
20+
apps published, 6 in the studio
10 years
of apps shipped to production
10
AI features embedded in shipped apps
+ WHAT YOU GET
An app doesn't sell itself. We ship everything around it.
Most studios stop at the code. You end up with an app on the stores nobody can find, no page to sell it and no way to talk to your users again. Here, it all ships together.
The iOS + Android app
One codebase for both stores: same design, same speed, one budget. Accounts, notifications, payments, offline mode.
- Designed to your brand
- Accounts & Apple/Google sign-in
- Push notifications
- Payments & subscriptions
The landing page that sells it
The page you point your ads, posts and sales team to. Written to convert into installs, not to look pretty.
- Pitch & proof
- Store buttons
- Conversion tracking
- Ad-ready
Your brand's website
The site your customer checks before trusting you: what you do, for whom, with what proof. Fast, indexed, up to date.
- Core pages
- Baseline SEO
- Blog / news
- Contact form
Newsletter & emails
A user who uninstalls is gone forever — unless you have their email. Capture, welcome sequence, recurring sends.
- Email capture
- Welcome sequence
- Newsletter sending
- Automated follow-ups
Store publishing
We handle submission end to end: developer accounts in your name, listings, screenshots, copy, and the back-and-forth with Apple review.
- Apple & Google accounts in your name
- App Store / Play Store listings
- Optimized screenshots & copy
- Updates shipped
Back-office & numbers
An admin space where your team runs content and users, plus the tracking that tells you who installs, who drops off and where.
- Content management
- User view
- Sign-up funnel
- Crash reporting
+ THE REAL PROBLEM
Your app isn't hard to build. It's hard to get shipped.
You have the need, sometimes even the designs. What stops you is the quote: 4 to 6 months and twice the budget, because the agency rebuilds iOS and Android separately, with a project manager, a PO and two teams to bill.
During those six months, your operation keeps hitting the same ceiling. You're paying for a hypothesis.
Our way: scope settled in 30 minutes, a build in your phone within the first week, and an app published before the quarter ends. You judge on something real.
The agency quote
- 4 to 6 months before a real first version
- iOS and Android billed twice
- A meeting to change one button
- The code stays with the agency
- Website and emails: another vendor, another quote
- A change order on every “and also…”
With us
- A testable app from week 1
- One codebase, both platforms
- One 45-min sync a week, otherwise we build
- Source code and accounts in your name
- App, landing page, website and newsletter in the same package
- Fixed price, agreed before the first line of code
+ WHAT MAKES US DIFFERENT
Four things a classic agency can't offer you.
Not brochure promises: four concrete consequences of how we work, all of which you can verify before signing.
We ship at a pace an agency quote can't hold
Where a classic quote says four to six months, we shipped a complete social network — feed, accounts, payments — in sixty days. It isn't magic: we no longer hand-write the repetitive code, the tests and the technical groundwork. A fleet of AI agents produces them, under architecture rules the project cannot bypass, and under review. You get the timeline without the technical debt that usually comes with it.
Strive: social network shipped in 60 days, clean architecture from day one — the CEO says it himself
You're locked into nothing
The source code is delivered and documented in your repository, the App Store and Google Play accounts are opened in your name, hosting is on your card. That's the exact opposite of agency lock-in: the day you want to leave, or hire in-house, another team picks it up without calling us. We put it in writing because it's what you should demand of any vendor.
Package-based architecture, custom lint rules, handover documentation
Whoever writes the code has already scaled a product
Not someone executing a spec. CTO of Evolum from 0 to €120,000 monthly revenue without raising a cent, 4.8★ across 11,000+ reviews, seven years in production with no rewrite. What that means for you: we discuss paywall, onboarding, retention and the server bill at kickoff — not six months after launch, when it's expensive to fix.
Evolum: 100,000+ users on roughly €500 a month of infrastructure
+ AI, INSIDE YOUR APP
AI isn't the product. It's a feature of yours.
We don't sell "AI". We wire into your application the pieces that save your team hours, or answer your customers when nobody is available. Each one already runs somewhere — the proof is below.
Voice agents
Booking, call qualification, phone support. A conversation that holds up, connected to your calendar or your CRM.
Speech recognition and synthesis running in production on our own agents
Assistant connected to your data
Not a ChatGPT wrapper: an assistant that answers from your documents and your database, inside your app, with its guardrails.
This site's help bubble: 13 automated tests — prompt leakage, hallucination, confidentiality — used to pick the model on measurement, not on feel
Automated media pipeline
Transcription, subtitling, cutting, formatting for publication. Dozens of hours of post-production that disappear from your team's schedule.
Full pipeline in production: raw video → script → subtitles → publication
Content generation and structuring
Articles, document summaries, product sheets, rewriting. Text you can use as-is, not filler.
Content engines running in our own apps and on this site
A harness written to measure, not a wrapper
This is the real difference. A useful agent isn't an API call: it's a model, the tools it's allowed to use, a memory that persists between conversations, and guardrails that stop it saying anything it likes. We write that machinery by hand, for your business — and we test it before wiring it in.
Agents in production with isolated profiles, persistent memory and a model chain of their own
WHAT WE MASTER, BY NAME
- Hand-written agent harness loop, allowed tools, error recovery — not an API call in disguise
- RAG over your documents chunking, index, source citation: the answer can be checked
- Context management persistent memory, summaries, a controlled window — the agent doesn't lose the thread
- Guardrails and confidentiality what it may say, read, send. Your data doesn't go off to train elsewhere
- Evaluations before launch automated tests — hallucination, prompt leakage — that pick the model, not a gut feeling
- Cost and latency under control model chain, cache, fallback: we know what every call costs and how long it takes
One rule: if an AI feature doesn't move a number you already track, we tell you not to buy it. AI impresses in a demo and disappoints in production when it answers no real need.
And if your app needs no AI at all, that's fine: most don't, and we build it without. This specialty changes one thing only — the day your project does need it, you don't have to switch vendors or bring in a second one.
+ THE SCOPING CALL
We don't send a sprawling quote. We give you a price, in 30 minutes.
Every app has its own scope, so its own price. Rather than a grid that fits nobody, we take 30 minutes to settle what ships first — and you leave with a firm number and a launch date. The call is free and commits you to nothing.
What the app has to unlock
Not the feature list: the number behind it. A manual step eating hours, a missing sales channel, customers lost on a slow app. If that number doesn't exist, we'll say so — and we won't sell you anything.
What ships first
We settle the scope out loud: the journey that makes money ships now, the rest waits for the next version. That single call is the difference between six weeks and six months.
The price and the date
A firm number, decided before the first line of code, and a launch date. Anything outside the scope is quoted separately and stated before you sign — never discovered at the end.
What you leave with, even if we never work together
- The scope of your first version, written down
- A firm price and a publication date on both stores
- What else to budget for: developer accounts, hosting, media spend
- Our honest read if the project isn't ready — it has happened, it will happen again
Can we know the price beforehand?
Yes — on the call. We no longer publish it here because a number without a scope means nothing: the same idea can cost three times more depending on what we ship first. What we can say right now: an app published on both stores is a five-figure investment, we work with businesses that already collect revenue, and the price doesn't move once it's stated.
No bespoke deliverable — mockup, specification, prototype — is produced before that scoping call. That's the rule, and it applies to everyone.
+ HOW THE DATE HOLDS
Four steps, one sync a week, zero fog.
45 minutes of your time per week. In between, we build — nothing for you to steer, arbitrate or chase.
-
WEEK 0
Kickoff
30 minutes to settle it: what the app has to unlock, what ships first, what waits. You leave with a fixed price and a launch date.
- Scope locked
- Price & date
- Key flow designed
-
WEEK 1
Foundations
Accounts, navigation, real data, your visual identity. By the end of the week, you open your app on your own phone.
- Installable app
- Real data
- iOS + Android in parallel
-
WEEKS 2 – 5
Build
Features in the order of what pays off fastest. Payments, content, notifications. In parallel: the landing page, the website and the newsletter.
- Core features shipped
- Testable build every week
- Landing & website live
-
WEEK 6
Launch
Real-device testing, store listings, submission. We handle Apple review. You get a live app, its accounts and the documentation for what comes next.
- Published on iOS + Android
- Store listings ready
- Handover & documentation
At the end you don't have a mockup or a promise: you have an App Store link to send to your customers.
Why 6 weeks when a studio says 6 months
One codebase for both platforms, zero layers between you and the people building it, and tooling that lets us iterate in hours where it used to take days. What we cut is waste, not quality — Evolum has run for 7 years at 92% crash-free sessions.
+ APPS YOU CAN DOWNLOAD
Go check them on the stores.
All public, all still running. No screenshots of projects that never shipped.
UpDrive
The app for ride-hailing drivers: rides, earnings, compliant invoicing. Over 1,000 drivers pay for it every month. A new version ships soon.
- 1,000+ paying subscribers
- Compliant invoicing
- iOS + Android
Evolum
The rituals app competing with Calm without their budget. 0 → €120k monthly revenue, 100k+ users, €500/month of infrastructure.
- 0→€120k MRR
- 4.8★ · 11k reviews
- 28% conversion
BeeDone
A gamified to-do list, listed by Zapier among the best productivity tools alongside Asana. Designed, built and launched solo.
- Featured by Zapier
- Top 5 Product Hunt
- iOS + Android + web
Strive
A complete social network shipped in 60 days: feed, accounts, payments. Foundations laid on day one, ready to take the growth.
- 60 days
- Real-time feed
- Paywall at launch
MuseOtter
An AI-augmented journaling app, shipped with its website, its blog and a documented design system. The full format, from product to the page that sells it.
- App + website + blog
- Documented design system
- iOS + Android + web
Socially Fox
A social presence management app, from design to publication. Proof that a strong identity holds up in four inches of screen too.
- Full design system
- iOS + Android
- Published
+ WHO IT'S FOR, AND WHO IT ISN'T
We don't take every project.
A firm price is worthless if we say yes to everything. Three conditions, none negotiable — they protect your budget as much as our schedule.
We work together if…
- Your business already collects revenue. The app is an investment, not a budget to invent.
- You can put a number on what it costs you today: a manual step, lost margin, a missing sales channel.
- You want to scale an operation that's capped, or replace a slow, badly rated app that's losing you customers.
We don't work together if…
- You're looking for a technical co-founder or someone to carry the risk for you.
- The project depends on a funding round, a grant or a budget still to be found.
- You want everything at once with no scope decisions: that's not our format.
+ WHAT YOU OWN
At delivery, you need no one. Not even us.
The source code
Delivered and documented in your repository, at final payment. No licence, no dependency.
The accounts
App Store Connect, Google Play, hosting, payments: opened in your name, your company, your card.
The documentation
How it's built, how to ship an update. Another developer picks it up without calling us.
Your data
Users, sales, analytics: yours, exportable. It's your asset, not ours.
+ SHALL WE START?
Tell me what your app has to unlock.
30 minutes to scope it: what ships first, what it costs, when it's live. You leave with a price and a date — even if we don't end up working together.
+ THE AWKWARD QUESTIONS
What you're already wondering.
How much does it cost, and why isn't the price published?
Because a price without a scope means nothing: the same idea can cost three times more depending on what ships first. What we can tell you before we even speak: an app published on both stores is a five-figure investment, and we work with businesses that already collect revenue. You get the exact number at the end of the 45-minute scoping call — firm, and it doesn't move afterwards.
Why is it cheaper than an agency — where's the catch?
There is no catch, there are simply fewer people to pay: no project manager, no separate iOS and Android teams, no intermediate layer billing you for status reports. An agency sells you six people because it has six; we sell you the outcome, with tooling that does the volume in their place. The price stated at the scoping call is firm: anything outside the scope is quoted separately and stated before you sign, never discovered at the end.
Why 6 weeks when an agency says 6 months?
One codebase for iOS and Android instead of two teams. No intermediate layer: you talk to the people building it, not to a project manager relaying. And tooling that lets us iterate in hours where it took days. What we cut is waste.
What's the trade-off?
Scope. We ship fast because we cut hard at kickoff: what carries the value goes first, the rest waits. If you want everything at once, take the full package — or an agency and six months.
What if my app has to handle load?
Evolum has run for 7 years, 100k+ users, 92% crash-free sessions, on €500 a month of infrastructure. UpDrive bills over 1,000 drivers every month. The foundations are laid on day one: that's exactly what makes it fast afterwards.
I'm not technical. Is that a problem?
No, it's the simplest case. You bring the business and the customers, we bring the rest. A 45-minute sync a week, we show you something real, you tell us what rings true. No jargon, no technical decisions for you to make on our behalf.
I already have an app and it's a mess. Will you take it over?
Often yes. We start with a short audit: what's salvageable, what has to be rewritten, what each costs. You decide with numbers, not with our opinion.
Who owns the result?
You do, entirely. Source code in your repository, App Store Connect and Google Play accounts in your name, hosting on your card, data exportable. No licence, no dependency on us.
How does payment work?
A deposit at kickoff, the balance at publication. No custom deliverable is produced before that first payment — that's the rule, and it applies to everyone.