How much does custom web app development cost?

Custom web application development starts from u00a310,000 for focused MVP builds.

What's the difference between a website and a web application?

A website primarily displays content. A web application is interactive software that stores and processes data.

Do you build Progressive Web Apps (PWAs)?

Yes u2014 PWAs are a core part of our service. They work offline and can be installed to a home screen.

Can you build an MVP first and expand later?

Yes u2014 we recommend and specialise in MVP-first development with scalability designed in.

Do you handle the backend and database as well?

Yes u2014 we're a full-stack team handling frontend, backend, and database.

Who owns the code at the end?

You do. All source code, documentation, and deployment credentials are handed over to you.

02 — Development

Custom Web App & PWA Development

Complex web applications, built to scale.

Web applications are software. They demand architectural discipline — clean data models, robust APIs, scalable state management, and UIs that stay fast as data grows.

⏱ 8–20 weeksFrom £10,000

Start your app build →View Our Work

40+

Projects Delivered

Years Experience

Services Offered

100%

Satisfaction Rate

What We Do

What is Custom Web App & PWA Development?

Web applications are software. They demand architectural discipline — clean data models, robust APIs, scalable state management, and UIs that stay fast as data grows.

At Omnix Studio, we combine development expertise with a performance mindset — every custom web app & pwa development engagement is tied to real business outcomes, not just deliverables.

React / Next.js apps

Progressive Web Apps

API integration

Auth & user management

What You Get

Included in every Custom Web App & PWA Development project

u2b21

React / Next.js Application

Production-grade frontend built with React and Next.js u2014 typed, tested, and documented.

u25ce

REST or GraphQL API

Clean backend API design with authentication, rate limiting, and documentation.

u2726

Authentication & Permissions

Secure user auth (JWT, OAuth, magic link), role-based permissions, and session management.

u2b1b

Database Architecture

Relational or document database schema designed for your data model.

u25c8

Progressive Web App (PWA)

Offline capability, installable home screen experience, and push notifications.

u25b6

Deployment & DevOps

CI/CD pipeline, staging and production environments, automated testing, and monitoring.

How We Work

Our Custom Web App & PWA Development process

Structured process. Predictable delivery. No surprises.

TYPICAL TIMELINE

8–20 weeks

Requirements & Architecture

Feature scope, data model, API design, and tech stack decisions documented.

Design System

Component library and all UI screens designed and approved.

Backend Development

API, database, and auth layer built first u2014 solid foundation before the UI is connected.

Frontend Development

React/Next.js frontend built sprint-by-sprint with staging previews.

Integration & Testing

End-to-end testing, performance load testing, security review, and cross-browser QA.

Deployment & Handover

Production deployment, documentation, and team handover.

Why Omnix Studio

Design that performs, not just impresses.

Free consultation →

◎

One in-house team

Design and development under one roof — no handoff gaps, no translation errors, no bloated timelines from managing multiple vendors.

◈

Conversion-first thinking

Every decision tied to a business outcome. We don't design for awards — we design for metrics: more leads, more sales, lower churn.

✦

Fast without cutting corners

Premium quality without the 6-month agency timeline. We run tight sprints, communicate daily, and ship on schedule.

⬡

Transparent pricing

Fixed-price quotes with no scope creep surprises. You know exactly what you're getting before any work begins.

⬛

You own everything

All source files, code, and assets transferred to you on completion. No subscriptions, no platform lock-in, no dependency on us.

⟐

Ongoing support available

We don't disappear after launch. Maintenance retainers, growth services, and continued development available as you scale.

FAQ

Common questions about Custom Web App & PWA Development

Can't find what you're looking for? Ask us directly.

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Ready to Start?

Let's build your web app
architected to scale.

Free 30-minute consultation. Fixed-price quotes. No obligation.

Start your app build →See our work first →