FAQ
Your questions, our answers
Everything you need to know before starting your custom business application development project.
How much does custom business application development cost?
The cost depends on project complexity, number of features and required integrations. A typical project starts from €5,000 for an MVP (minimum viable product) and can go up to €50,000 and more for a complete solution. We always provide a detailed and transparent quote before starting.
How long does it take to develop an application?
An MVP can be delivered in 4 to 8 weeks. A complete application with all features typically takes 3 to 6 months. We work in agile methodology with intermediate deliveries, allowing you to use the first features quickly.
What technologies do you use?
We use modern and proven technologies: React, Next.js and Astro for the frontend, Node.js and Python for the backend, PostgreSQL and MongoDB for databases. For AI, we integrate OpenAI, Anthropic (Claude) APIs and open source models. The technology choice is always adapted to the specific needs of the project.
Do I own the source code?
Yes, 100%. You own the entire source code, technical documentation and all deliverables. We provide full access to the Git repository and deployment infrastructure.
Do you offer maintenance after delivery?
Yes, we offer maintenance contracts including: responsive technical support (response within 48h), bug fixes, security updates, and feature enhancements. Maintenance is optional but strongly recommended to ensure the longevity of your solution.
Do you only work in Lyon?
No, we work with clients throughout France and across Europe. Our agency is based in Lyon, but our collaborative tools (video conferencing, project management, screen sharing) make us just as effective remotely. We also travel to client sites when necessary.
What is the difference between a custom application and a SaaS?
A SaaS (online software) is a standard solution used by many companies. A custom application is developed specifically for your business processes. The advantage of custom: it adapts perfectly to your way of working, without compromise. No recurring monthly subscription, no dependency on a vendor.
How do you integrate artificial intelligence into applications?
We integrate AI pragmatically, where it brings real value: automating repetitive tasks, document analysis, internal chatbots, intelligent recommendations, data extraction. We use the best available models (GPT, Claude, open source models) depending on the use case.
Can I track my project progress in real-time?
Yes. We use collaborative project management tools where you can track every task, every sprint and every delivery. Regular demos (every 2 weeks) allow you to see concrete progress and adjust priorities.
How does the first contact work?
Simple: contact us via the form or by email, we'll schedule a first 30-minute call (free and with no obligation) to understand your needs. If the project is relevant, we'll send you a detailed proposal within 5 business days.