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Development studio · Paris
Custom software, without the complexity.
Websites, online stores, web and mobile apps, for businesses and individuals alike. One point of contact, a clear quote, and code that belongs to you.
Why work with us
We handle the technical side. You keep a clear view of scope, budget and timeline.
One point of contact
The same person follows your project from the first call to launch.
Transparent quotes
A detailed estimate before any work starts. No hidden fees.
Your code, your access
You own the source code, the domain name and every account.
Fast and search-friendly
Lightweight, mobile-first sites built to rank well in search engines.
Who we help
Businesses, freelancers or individuals: here's what we most often build for each.
Restaurants and hotels
Menu, photos, opening hours and booking links, easy to read on any phone.
Independent professionals
Lawyers, consultants, therapists: a credible online presence and an easy way to get in touch.
Startups
Ship a first version quickly, test it with real users, then grow it step by step.
Online sellers
Sell online with a clear catalogue, secure payments and order tracking.
SMEs and non-profits
Internal tools, member areas and automation of repetitive tasks.
Individuals
A personal website, portfolio, online CV, blog or a site for a project you care about. Same prices, same support.
Services
Indicative starting prices. The final price depends on your project and is set in a personalised quote.
Landing page
A single page to present an offer and convert visitors.
from€800
- Responsive, mobile-first design
- Contact form
- Basic SEO
Business website
A 5 to 10 page site to present your business.
from€1,500
- Custom design
- Multilingual on request
- Optimised for speed and SEO
Online store
An e-commerce site to sell your products online.
from€2,500
- Product catalogue
- Secure online payments
- Order and shipping management
Website redesign
Modernise an existing site without starting from scratch.
from€1,000
- Audit of the current site
- New design, content preserved
- Migration without losing rankings
Web application
A platform, SaaS or internal tool built around your workflow.
from€3,900
- User accounts and roles
- Admin back office
- API and payment integrations
Mobile app
An iOS and Android app, from idea to store release.
from€5,000
- Accounts and push notifications
- Connected to your existing tools
- Release on the App Store and Google Play
Maintenance and support
Your site or app stays up to date, secure and online.
- Security updates
- Regular backups
- Uptime monitoring
- Small changes included
monthly planCustom quote
Get a quotePrices include VAT for individuals and exclude VAT for businesses. Need something that doesn't fit a box? Tell us about it.
Included in every project
Whichever service you choose, these are part of the job at no extra cost.
Responsive design
A polished layout on phones, tablets and desktops.
Secure connection
HTTPS and an SSL certificate set up from day one.
Basic SEO
Optimised titles, descriptions, sitemap and loading times.
GDPR compliance
Legal notice, privacy policy and compliant forms.
Handover
We show you how to manage your site or app on your own.
Source code delivered
The code and every account are handed over at delivery.
How we work
A simple four-step process.
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Discovery
We talk about your goals, constraints and budget. No commitment.
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Quote
You receive a detailed proposal: scope, timeline and price.
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Build
Design and development, with regular check-ins to review progress.
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Launch
Deployment, handover and follow-up after launch.
Got a project in mind?
The first conversation is free and with no commitment. Tell us your idea and we'll help you find the right solution and the right budget.
Frequently asked questions
How much will my project cost?
The prices shown are starting points. The final amount depends on the number of pages or screens, features and integrations. Describe your needs in the form and we'll send you a detailed quote.
Do you work with individuals?
Yes. Personal site, portfolio, blog or side project: we work with individuals too, at the same starting prices (VAT included). You have a 14-day withdrawal period, explained in our terms for individuals.
How long does it take?
As a rough guide: one to three weeks for a landing page, three to six weeks for a business website, several months for an app. The exact timeline is set out in the quote.
Will I own my website?
Yes. The source code, domain name and all accounts belong to you. You're free to switch providers at any time.
Do you offer support after launch?
Yes, through the maintenance plan: updates, backups, monitoring and small changes. There's no minimum term.
Do you work remotely?
Yes, with clients across France and abroad, in English and French.
Tell us about your project
Describe what you need in a few lines. We'll get back to you to discuss it and prepare a tailored quote.
support@softwaresimplicity.online