Web and mobile apps
From a first version to a launch-ready MVP: web apps, mobile apps, APIs and dashboards.
SENIOR ENGINEERS × AI · LUXEMBOURG
You bring the idea. Our senior engineers use AI to build it, and review every line it writes. Software and hardware, from first version to launch.
Day One €199.99 excl. VAT · credited if you continue within 2 weeks
See what we've builtTHE AI GAP
You can, and for a first demo you probably should. AI tools get something on screen in a weekend. Getting from that demo to a product customers can rely on is where most projects stall.
| Approach | Time to a demo | Time to production-ready |
|---|---|---|
| You, without AI | long | very long |
| You, with AI tools | very short | very long, if ever |
| An agency without AI | medium | long |
| Our engineers + AI | very short | short |
We use AI every day. That's how we know where it breaks.
See how we workHOW IT WORKS
AI drafts fast. Our engineers decide what gets built, and check everything it writes before it ships.
1 day
A senior engineer turns your idea into a plan and builds a first iteration with AI, in one day. You keep both, whatever you decide next.
Weekly
Weekly sprints. In each one, engineers plan the work, AI drafts it, and engineers review, test and harden it. You see progress at the end of every sprint.
Handover
We deploy, document and hand over. You own the code, the plan and the designs.
Optional · monthly
An optional monthly plan: fixes, updates, monitoring and EU hosting, from engineers who already know your code.
Engineer plans
AI drafts
Engineer reviews, tests, hardens
repeat
Every line of AI-generated code is reviewed by a senior engineer before it ships.
From a first version to a launch-ready MVP: web apps, mobile apps, APIs and dashboards.
The device, its firmware, the app and the website, from one team. We design boards, source parts and assemble prototypes in our own workshop.
Built something with Lovable, Bolt, Cursor or ChatGPT? We review it, fix what's risky and get it ready for real users.
Add AI to your product: language-model features, search over your own data, and automation, built with cost and privacy in mind.
Have an engineering team or a research lab? We can join your engineers or run a project end to end.
Open-weight AI models and agents on hardware inside your own premises, for teams that must keep their data in-house.
One client product, one product we sell, and two open-source projects you can read line by line.
A smart speaker we built across hardware, software and web, from the circuit board to the online store.
Client name confidential.
We did the full product design, the assembly engineering and the full PCB ourselves, and built the ESP32 firmware with its update servers and the mobile app that controls the speaker. We also built the website that sells it, with a 3D visual and integrated payments, and the website that receives orders and follows the production line.
A quantum-safe VPN powered by Quantum Key Distribution, for companies and research organizations.
Visit the product website (opens in a new tab)orion-encryptor.lu
Access-control software that works with RFID readers and records when staff come and go.
Read the code on GitHub (opens in a new tab)github.com/2RL-AI/PulseID
Real-time reflow soldering monitor that uses thermal cameras to track circuit-board temperatures against the SAC305 profile.
It runs as a command-line tool, as a web interface, or as a standalone engine for headless setups such as a Raspberry Pi.
Read the code on GitHub (opens in a new tab)github.com/2RL-AI/reflow-eye
Don't take our word for it.
Read our codegithub.com/2RL-AI(opens in a new tab)Most software teams stop at the screen. We also have a workshop in Frisange. Circuit boards made by our fabrication partners are assembled, soldered and fitted into printed enclosures here, so a prototype doesn't wait weeks in someone else's queue.
Places components on our boards automatically, so small batches of prototypes are assembled in-house.
Solders assembled boards with controlled temperature profiles — the process our open-source Reflow Eye was built to monitor.
Enclosures and fixtures printed in hours, so a prototype looks and feels like a product early.
We build on ESP32, STM32 and Arduino, with circuit boards fabricated by JLCPCB and PCBWay and parts from Mouser and Digikey.
Engineers write the plan. AI drafts code against it.
We use current models from OpenAI and Anthropic, and most of our projects list which ones we used.
A senior engineer reviews every line AI writes. Then it's tested and checked for security before it ships.
The AI models we use don't train on your code or data.
SOVEREIGNTY
For companies and public bodies that can't send their data just anywhere. What we host for you runs in the EU, and the AI we set up for you runs in your own building or on an EU sovereign cloud.
EU data centres of Scaleway or OVHcloud, European cloud providers
Your data stays within the EU-27 unless you ask otherwise
For public-sector and critical-service projects, we design to the rules you answer to, such as GDPR and NIS2, and document how the system meets them
We install open-weight AI models and agents on hardware inside your own premises, or run them for you on an EU sovereign cloud, in the EU data centres of Scaleway or OVHcloud. On your premises, models run fully offline: no prompt or document leaves your network. With either option, nothing is sent to the model's publisher.

Example: Mac Studio
Fits most companies
On your premises
On EU sovereign cloud
from €999.99/month excl. VAT
no set-up fee

Example: NVIDIA H100 data-centre GPU
On your premises
On EU sovereign cloud
from €6,999/month excl. VAT
no set-up fee

Example: a rack of GPU servers
On your premises
On EU sovereign cloud
from €69,999/month excl. VAT
no set-up fee
We check each model's licence against your use before we install it.
Hardware budgets are indicative market prices for the hardware alone, excl. VAT, checked in September 2026. Your quote is fixed in writing before any work starts.
The EU sovereign cloud includes dedicated GPUs, model set-up, monitoring and support, with updates to newer models when the hardware supports them. There are no usage limits beyond what the hardware can handle. It's billed monthly, with a minimum commitment of 6 to 12 months, depending on the setup, and your final price is fixed in writing when you sign the contract.
WHERE WE WORK
Our base and workshop are in Frisange, just south of Luxembourg City. We come on site around Luxembourg and across the EU, the UK, Norway and Switzerland; in North America, the Middle East and North Africa, we work with you remotely day to day and travel to you when your project needs it.
Map of Luxembourg, Europe, North America, the Middle East and North Africa. It marks Luxembourg City; our base and workshop are in Frisange, just south of it. It also shows where we come on site: Luxembourg and the neighbouring regions, the 27 EU countries, the United Kingdom, Norway and Switzerland; and where we work remote first, remotely day to day and travelling to you when your project needs it: North America (the United States and Canada) and the Middle East and North Africa (Türkiye, the Gulf, Algeria and Morocco).
Luxembourg City — our base and workshop are in Frisange, just south of the city
Around Luxembourg — on site in Luxembourg and the neighbouring regions
The 27 EU countries — on site when your project needs it
The UK, Norway and Switzerland — on site when your project needs it
North America, the Middle East and North Africa — remote first: we work with you remotely day to day and travel to you when your project needs it
Starting prices, so you know where you stand before you talk to anyone. Your final price is fixed in writing before any work starts.
Prices exclude VAT.
€199.99
One senior engineer. One day. A first iteration and a detailed plan.
Software
A working first version of the core flow at a preview link, plus the implementation plan.
Hardware
The architecture, a component shortlist with a cost estimate, a proof of concept on a development board where feasible, plus the implementation plan.
An app you built with AI tools
A production-readiness review, a prioritised fix list, the most critical fixes done, plus the implementation plan.
from €299.99
From one week
A launch-ready first version of your web or mobile app: design, build, automated tests, deployment and handover.
Starts with Day One
from €1,499.99
Prototype in weeks, market-ready product in months
Electronics, firmware, app and website, with prototypes assembled in our own workshop.
Starts with Day One
from €499.99
Scope set after the Day One review
We take over what you built with AI tools, fix what's risky, add tests and deploy it properly.
Starts with Day One
€99.99/month
Monthly
Fixes, updates, monitoring and EU hosting, from engineers who know your code.
from €999.99 + hardware
or on EU sovereign cloud from €999.99/month, no set-up fee
Hardware sized to your models and users, and quoted separately
Open-weight AI models and agents, installed on hardware on your own premises or run for you on an EU sovereign cloud. On your premises, no prompt or document leaves your network. The cloud is billed monthly, with a minimum commitment of 6 to 12 months, depending on the setup.
Anything we haven't covered? Ask us directly. We reply within one business day.
One day of a senior engineer's time. What you get depends on the project:
Day One has a fixed price, and it's credited if you continue within two weeks of paying the Day One invoice.
You decide. If you continue, you get a fixed price in writing for the next step, and nothing starts without your OK. We then work in weekly sprints: engineers plan, AI drafts, engineers review, test and harden, and you see progress at the end of every sprint. At launch, we deploy, document and hand everything over. If you stop after Day One, you keep everything we produced.
You can, and for a first demo you probably should. The hard part comes after: login and payments, security, hosting, testing, and code that doesn't break every time you change it. That's the work our engineers do every day.
Not to get started. We can be your engineering team from the first version to launch, and keep supporting your product afterwards.
Yes. Everything we produce for you — code, plans, designs and documentation — is yours, including the Day One output if you decide not to continue.
Yes. If you ask, we sign an NDA before discussing any details. We're a Luxembourg company and follow the GDPR, and for sensitive projects we can work on-premise or in air-gapped environments.
From a first version to a launch-ready MVP: web apps, mobile apps, APIs and dashboards. For a hardware product, we also build the app and the website that go with the device.
From one week. An MVP is a launch-ready first version of your web or mobile app: design, build, automated tests, deployment and handover. The MVP package costs from €299.99 excl. VAT, starts with Day One, and its final price is fixed in writing before any work starts.
Yes. We write code and documentation another developer can pick up, and we hand everything over at the end of a project.
In the EU. What we host for you runs in the EU data centres of Scaleway or OVHcloud, European cloud providers, and your data stays within the EU-27 unless you ask otherwise. For public-sector and critical-service projects, we design to the rules you answer to, such as GDPR and NIS2, and document how the system meets them.
You can take everything and run it yourself, or choose a Care plan: fixes, updates, monitoring and EU hosting from the engineers who built it.
Engineers write the plan and AI drafts code against it. A senior engineer reviews every line AI writes, and the code is tested and checked for security before it ships. The AI models we use don't train on your code or data.
Yes, it's one of our offers. Day One starts with a production-readiness review: what's solid, what's risky and what it takes to go live. We fix the most critical issues the same day.
Yes: language-model features, search over your own data, and automation, built with cost and privacy in mind. For data that has to stay in-house, see Local AI.
Yes. We install open-weight models such as Qwen, DeepSeek, GLM, Kimi, Llama and Gemma on hardware in your premises, sized to the models you need and the people who use them. Models run fully offline, so no prompt or document leaves your network. Installation starts from €999.99 excl. VAT, plus the hardware.
If you'd rather not run the hardware yourself, we can run the same models for you on an EU sovereign cloud, in the EU data centres of Scaleway or OVHcloud, from €999.99/month excl. VAT, with no set-up fee. The monthly price includes dedicated GPUs, model set-up, monitoring and support, with updates to newer models when the hardware supports them, and there are no usage limits beyond what the hardware can handle. The cloud is billed monthly, with a minimum commitment of 6 to 12 months, depending on the setup. Either way, nothing is sent to the model's publisher.
It depends on the models you need and the people who use them. We offer three setups:
We check each model's licence against your use before we install it. Each setup runs on your premises or on an EU sovereign cloud: see Local AI setups for who each one suits and what it costs.
Yes: electronics, firmware, apps and websites, with prototypes assembled in our own workshop in Luxembourg. A first prototype usually takes weeks. A market-ready product takes months, sometimes longer: the smart speaker we built for a client took 1.5 years from start to delivery.
The device, its firmware, the app and the website, from one team. We design boards, source parts and assemble prototypes in our own workshop. We build on ESP32, STM32 and Arduino, with circuit boards fabricated by JLCPCB and PCBWay and parts from Mouser and Digikey.
In the workshop, a pick-and-place machine, a reflow oven and 3D printers let us assemble, solder and fit small batches of prototypes into printed enclosures in-house.
With Day One: the architecture, a component shortlist with a cost estimate, a proof of concept on a development board where feasible, plus the implementation plan. The Hardware product package costs from €1,499.99 excl. VAT, and Day One is credited toward it if you continue within two weeks of paying the Day One invoice.
Yes. We can join your engineers or run a project end to end. Either way, a senior engineer reviews every line AI writes before it ships. We work with you as consultants, at a day rate, starting with Day One.
No. We also join engineering teams and research labs, and our EU hosting and Local AI are made for companies and public bodies that can't send their data just anywhere.
Both. Our base and workshop are in Frisange, just south of Luxembourg City. We come on site around Luxembourg and across the EU, the UK, Norway and Switzerland; in North America, the Middle East and North Africa, we work with you remotely day to day and travel to you when your project needs it.
See where we work on the map.
Day One costs €199.99 excl. VAT. Prices for everything else are in the pricing section. After Day One you get a fixed price in writing for the next step, and nothing starts without your OK.
There's no payment on this site. If it helps, we start with a meeting to talk your project through. Then we confirm Day One and send its invoice by email, and you pay it before the day.
For every step after it, the price is fixed in writing before any work starts, and nothing is booked or charged until you say yes. The MVP, Hardware product and AI-built app to production packages are paid by milestone. Care is billed monthly. The EU sovereign cloud is billed monthly, with a minimum commitment of 6 to 12 months, depending on the setup.
You pay by bank transfer or credit card. Prices exclude VAT.
Yes, if you continue within two weeks of paying the Day One invoice: what you paid for Day One is credited toward whatever you build next with us. If you stop there, you keep everything we produced.
One senior engineer. One day. A first iteration and a detailed plan. €199.99 excl. VAT, credited if you continue within two weeks of paying the Day One invoice.
You own everything we produce, even if you stop here.
Prefer to talk first?
We reply within one business day.