Technical Partner For SaaS Products, MVPs And Custom Web Apps

Calibre Web Studio is a custom web app development company in Europe that builds fast, reliable products using React and Django for EU and US startups.

We focus on custom web app development for startups that need to prove value, raise capital, and support real users. You get a small senior team that understands SaaS and ships production-ready software you can trust.

Build faster. Scale smarter. Ship with confidence.

SaaS product MVP development in 8 weeks for investor presentations

Fast MVP development services for early-stage founders

A team that builds web apps for startups in the US and the wider EU

Discuss Your Project

See How We Build MVPs

MVPs, SaaS platforms, and internal tools for founders across the EU and US

We help teams move from pitch deck to working product without gambling on unreliable freelancers or bloated agencies.

{ Services }

Custom Web App Development Services Built Around Your Product

You are not buying a theme.
You are building a product that has to stay fast, secure, and simple to evolve as you grow.

SaaS product development

Full platforms with roles, billing, analytics, and secure APIs. A SaaS product development agency that understands pricing, churn, and onboarding.

MVP development for startups

Lean, focused MVPs that let you test demand and talk to investors. Built as production-ready products, not throwaway prototypes.

Custom web app development

Dashboards, portals, and internal tools on React and Django with clean architecture and integrations that match how you work.

Custom eCommerce platforms

Stores with fast checkout, flexible catalogs, and reporting that supports operations, not just marketing.

Website design

Interfaces for MVPs, SaaS products, portals, and eCommerce flows with clear structure, reusable components, and forms that make complex actions feel simple for your users and your team.

Ongoing maintenance

Updates, improvements, and support from a team that already knows your stack and roadmap.

Explore Our Services >

Why Calibre

Why Startups Work With Calibre

Calibre Web Studio combines a Bosnia and Herzegovina based engineering team with a founder rooted in the European startup scene. You get senior custom web app development with startup-friendly pricing, clear communication, and a way of working that feels familiar to both EU and US founders.

Product first

We care about real usage, repeat customers, and revenue, not just shipping features.

Senior engineering

A team that has shipped SaaS products and custom platforms before.

Modern stack

React, Next.js, and Django for speed, clarity, and long-term reliability.

Full ownership

You own the code, infrastructure, and documentation. No lock-in.

Transparent process

Clear scope, milestones, and trade-offs at every step.

More About Us >

PROCESS TEASER

A Clear Path From Idea To Reliable Web App

See How The Process Works

01

Discovery and scope

Define goals, success metrics, and a realistic first release.

02

Architecture and UX

Flows and system design that match your use cases and roadmap

03

Development sprints

Short cycles with visible progress in staging and fast feedback.

04

Quality and security

Testing for core flows, edge cases, and performance.

05

Launch and handover

Deployment, monitoring, and documentation so your team can own it.

06

Maintenance

Lorem ipsum dolor sit amet, consectetuer adipiscing elit.

Ready To Talk About Your Web App

Whether you are looking for SaaS MVP developers in the EU or a custom web app team for your US startup, we help you go from idea to a live product that real users can rely on.

Discuss Your Project

Send Us Your Requirements