A web application is more than a website: it is software users use to do work — manage orders, track projects, book appointments, generate reports or communicate with the team. The difference between a site and a web application is in interactivity and the business logic behind it. Feather Studio develops custom web applications from idea to production.
Technology stack for web applications: Next.js as a full-stack React framework (frontend + API routes), PostgreSQL or MongoDB for data, NextAuth or custom JWT authentication, and deployment on Vercel, Render or a self-hosted Node environment. For complex backend logic — Node.js with Express or NestJS. The choice depends on project scope and requirements.
Examples of web applications we build: CRM and project management tools for small teams, booking and reservation systems with calendar, document management portals, B2B order and status tracking portals, internal tools replacing Excel spreadsheets and email coordination, and SaaS platforms with multi-tenant architecture.
Agency vs in-house development: an agency brings experience from multiple projects, a faster start (no need to build a team) and a predictable budget. An in-house team is better when the product is ongoing and requires continuous iteration. For MVPs and first versions — an agency is usually the faster and more economical path.
Feather Studio builds web applications with clear documentation, a code review process and project handover with maintenance instructions. Contact us with a short description of the problem the application should solve.
The call takes 30 minutes. We reply within 2 business hours and send a written proposal within 2 days.
02 · Example project
Aliansa · insurance · Belgrade
A custom Next.js application connected to the systems of three insurers, and a client portal with active policies, expiry dates and payment history.
Next.js · REST API · JWT · PostgreSQL
Case studyaliansa.rscase study
3 days → 20 mininsurance quote processing
03 · How we work
You see progress every week. After launch you get a Search Console and GA4 report, not just an invoice.
01 · 30 min
Goals, audience, timeline and budget. Free, in person or online.
02 · 2 days
Scope, price and plan in writing, with no small print.
03 · 2–12 wks
Design, development and content, with a review every week.
04 · 30 days
Launch, Search Console and GA4, and a report after 30 days.
05 · Frequently asked questions
Don't see your question? Email office@featherstudio.rs.
MVP with basic features from €11,900; more complex platforms and SaaS higher. Exact quote after specification.
MVP for smaller applications 4-8 weeks; more complex from 3-6 months. We work in sprints with regular demo sessions.
We can take over maintenance or hand over code to your team with documentation. Both are valid options.
Yes — API integrations with ERP, CRM, payment gateways and custom backend systems are part of our experience.
SaaS (Software as a Service) is an application paid by subscription and used by multiple clients (multi-tenant). Yes, we build SaaS MVPs.
06 · Related
07 · Contact
A few sentences about your business and timeline are enough. We reply within 2 business hours with a concrete next step.
office@featherstudio.rs
Mon–Fri 9am–6pm CET · Belgrade