About Us
About Calibre Web StudioCalibre Web Studio is a product-minded development studio that helps startups turn ideas into reliable web applications. We specialise in custom web app development for startups that need to ship fast, stay stable, and keep a clean roadmap as they grow.
We are a small senior team that works in React and Django every day. Our clients are founders and product leaders across Europe and North America who want a partner that speaks business, not only code.
Calibre is based in Bosnia and Herzegovina with a founder in the Netherlands, combining professional custom web development in the Balkans with a strong presence in the wider European tech scene.
We focus on:
Startups looking for custom web app development service.
Founders who need fast MVP development services without burning their product vision.
Teams that want web app developers for US startups and EU companies who understand SaaS basics like activation, churn, and retention.
If you are tired of generic agencies or solo freelancers that disappear, we sit in the middle. Small enough to care, experienced enough to ship.
Calibre started as a freelance practice building web apps and MVPs for early-stage companies. Over several years, that work grew into a small team that kept joining the same kind of projects:
- Founders who needed a reliable partner to design and ship their first SaaS release.
- Teams that had outgrown no-code tools and templates.
- Companies that needed custom portals and internal tools instead of more spreadsheets.
In 2025, we formalised that work into Calibre Web Studio. Same people, same stack, tighter focus. Now we run as a dedicated web app development company in Europe that helps startups move from deck to working product without losing control of their tech.
Our approach is simple:
Product first
We start from your goals, customers, and constraints. Every feature has a clear job to do and a metric that shows if it works.
Straight talk
You get honest feedback on scope, timelines, and trade-offs. We would rather say no to a feature than ship something that slows you down.
Modern, stable stack
We use React and Django because they are fast, well-known, and proven. That makes it easier to hire around the product later.
Visible progress
Work happens in short cycles with staging links, regular demos and clear status updates. You always know what is in progress and what is coming next.
Clean handover
You own the code, documentation, and infrastructure. If you bring in an internal team later, they get a project they can understand and extend.
Maintenance
Work happens in short cycles with staging links, regular demos and clear status updates. You always know what is in progress and what is coming next.
A few principles guide how we plan and build:
Clarity over complexity
Simple architecture and clear flows beat clever solutions that no one can maintain.
Good communication
We adapt to your tools and keep decisions documented. Less guessing, fewer surprises.
Long term stability
Fast MVPs are still built as real products, with testing and monitoring in place so they can grow instead of being thrown away.
Respect for your budget and time
We suggest scopes that match your stage. The goal is to move you to the next milestone, not to fill our backlog with unnecessary tasks.
We are a good fit if you:
Have a clear problem and need help turning it into a working web app.
Need custom web app development for your startup, not another marketing site.
Want a SaaS product partner that cares about launch, revenue, and retention, not just shipping features.
Are ready to collaborate, give feedback, and make decisions during the project.
We are not a great fit if you want the cheapest possible solution, a quick theme install, or a completely hands-off relationship.
Ready To Talk
If you are planning a new SaaS product, need a reliable MVP, or want to replace manual work with a custom web app, we are ready to listen. Tell us about your product, your stage, and what needs to change. We will share a clear path that fits your budget and gives you a realistic way to move forward.