
Business application developer in Rennes: why proximity makes all the difference
Entrusting your custom business tool to a freelance developer near Rennes: what proximity really changes, with a concrete case and an honest budget.
I build management software for small and medium businesses in Rennes and Brittany that replaces Excel files, paperwork and repetitive tasks: scheduling, inventory, quotes, time tracking, bookings.

Each tool is designed around the way you work and the people who use it every day. It then grows with your business.
Organise jobs, rounds or appointments, with an up-to-date schedule for the whole team.
Track incoming and outgoing items and stock counts, with QR labels if needed.
Prepare quotes faster, track invoices and find each customer's history.
Replace timesheets with simple entry, per job if needed, and ready-to-use reports.
Let your customers book on their own, without back-and-forth emails or missed calls.
Sort incoming requests, extract data from your documents or answer your customers' frequent questions.
One point of contact, from the first call to maintenance.
We look together at how you work and what wastes your time. If existing software is enough, I will tell you.
Scope, price and milestones are set before we start: no bad surprises along the way.
You test the tool as the project progresses and your feedback is taken into account before launch.
I import your existing data, train your team and take care of maintenance and improvements.
€5,000 to €15,000
The price depends on the number of screens, users and connections to your existing software. Most small business tools fall within this range; a more complete platform can cost more. The price is set in the quote, before we start.
€100 to €300 per month
Hosting, backups, updates and fixes, depending on the tool. Larger improvements are quoted separately.
Net prices: VAT not applicable (article 293 B of the French General Tax Code).
The first call and the quote are free.

SaaS booking and back-office platform for sports and leisure facilities: scheduling, payments, invoicing, and team management. Reliable and scalable solution.

SaaS work time tracking software: hours entry by project, weekly validation, anomaly alerts and reporting to manage team activity.

SaaS stock management software for SMEs: product tracking, inventory movements, QR labels and statistics to improve traceability and logistics management.

Tool to generate clickable HTML email signatures for Gmail, Outlook, and Apple Mail—individual or team-wide—plus flyers, business cards, and more.

Web and desktop software for reselling Pokémon cards: scan recognition, Cardmarket pricing, Vinted, eBay, and Leboncoin listings, inventory and margin tracking.

SaaS that finds tradespeople without websites, generates a demo site in their name, runs A/B email campaigns, and publishes the site upon payment.
At a fixed price, between €5,000 and €15,000 for most small business tools (scheduling, inventory, quotes, time tracking). The price depends on the number of screens, users and connections to your software; a more complete platform can cost more. It is set in the quote before we start, and maintenance then costs €100 to €300 per month depending on the tool.
The timeline is set in the quote depending on the scope. I deliver in stages: you use a first version quickly, then the tool grows with your feedback.
You talk directly to the person who designs and builds your tool, from the first call to maintenance. Fewer intermediaries, faster decisions and a price without agency overheads.
I am based near Rennes and travel within Rennes, Ille-et-Vilaine and Brittany when useful. I also work remotely with businesses across France.
Yes. I import the data from your existing files into the new tool, so your team does not start from scratch.
I will tell you on the first call. Custom software only makes sense when off-the-shelf tools do not fit the way you work.

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Describe your need in a few lines: I will reply within 24 hours with a first idea of the solution and budget.