Web app development services that scale with you
We build fast, secure web applications and SaaS platforms around the way your business actually works — customer portals, dashboards, marketplaces and internal tools. Neptunes Tech takes your idea from scope and UI/UX design to a production launch in the cloud, and keeps improving it after release.
- Projects from $1,000
- React · Next.js · Node.js
- Free project consultation
Web applications we build
From a lean MVP to a multi-tenant SaaS platform — software that replaces manual work and gives your customers a better experience.
SaaS platforms
Multi-tenant products with sign-up, subscriptions, user roles and billing, ready to grow with your customer base.
Dashboards & analytics
Real-time dashboards and reports that bring data from your tools into one clear view.
Customer & client portals
Secure portals where customers log in to book, pay, track orders or share documents.
Marketplaces & booking systems
Listings, search, scheduling and online payments for platforms that connect buyers and sellers.
Internal tools & CRMs
Admin panels, CRMs and workflow tools that replace spreadsheets and manual processes.
APIs & integrations
REST and GraphQL APIs that connect your web app to payment gateways, CRMs and third-party services.
What this looks like in practice
The shapes of web application we build most often.
The customer portal that replaces "any update?"
Customers email to ask where their order, case or project is. A portal gives them a login, live status, documents and payment — and gives your team back the morning.
The dashboard nobody trusts
Numbers live in four systems and every report disagrees. One application pulls them into a single model with defined metrics, so the team argues about decisions instead of data.
The marketplace with two sides
Buyers and sellers each need their own accounts, listings, search, messaging and payouts. We build both sides plus the admin tooling to run it.
The internal CRM that fits
Your sales process does not match any CRM you have tried. We build the one that does, with your stages, fields and automations.
What you get
Every web app development project includes the following, and the quote says so before you commit.
- A scoped definition of version one, with what we are leaving out and why
- Responsive, accessible UI that works on phones as well as desktops
- Backend, database and REST or GraphQL APIs
- Authentication, roles and permissions
- An admin dashboard for running the product day to day
- Cloud deployment with CI/CD, staging, backups and monitoring
- The repository and infrastructure in your own accounts
Why choose Neptunes Tech for your web app
We treat your web app as a product, not a one-off project: clear scope, clean code and infrastructure that keeps up as usage grows.
- A modern, battle-tested stack: React, Next.js, Node.js and TypeScript
- Fast, responsive and SEO-friendly front ends that work on every device
- Scalable cloud architecture with CI/CD and monitoring from day one
- Fixed quotes and regular demos, so you always know where the project stands
Our web app development process
Discover
We define the users, core workflows and success metrics, then turn them into a scoped plan and fixed quote.
Design
Wireframes and a polished UI prototype so the experience is validated before code is written.
Develop
Agile sprints with clean, tested code and a staging link you can try after every milestone.
Deploy & scale
Cloud launch with CI/CD and monitoring, then ongoing optimisation as usage grows.
Tools and technologies
Web App Development pricing
Every project gets a fixed quote after a free consultation. Typical starting points:
Starter
A small web app MVP with up to 5 core screens, responsive design and basic integrations.
Growth
A custom web application with tailored UI/UX, backend APIs, database and admin dashboard.
Scale
A full SaaS platform with microservices, DevOps, CI/CD and scalable, secure infrastructure.
Web App Development FAQs
How much does a custom web app cost?
Small web app MVPs start from $1,000, custom web applications with a backend and admin dashboard start from $4,000, and full SaaS platforms start from $9,000. We confirm a fixed quote after a free consultation.
How long does it take to build a web application?
A small MVP can be delivered in about 2 weeks, and a custom web application typically takes 4–6 weeks. Larger SaaS platforms are delivered in milestones so you can launch and gather feedback early.
What is the difference between a website and a web app?
A website mainly presents information. A web app lets users do things — log in, manage data, book, pay or collaborate — so it needs a backend, a database and proper security behind it.
Which technologies do you use for web apps?
We typically use React or Next.js on the front end, Node.js or Python on the back end, PostgreSQL or MongoDB for data, and AWS with Docker for hosting. The final stack is chosen around your requirements.
Can you improve or take over an existing web app?
Usually, yes. We start with a review of the code and infrastructure, fix the most urgent issues, then plan improvements such as performance work, new features or a gradual rebuild.
Do you provide support after launch?
Yes. Starter includes 30 days of post-launch support, Growth includes 90 days of priority support, and Scale includes priority support with an SLA.
Let's start a conversation
Whether you have a fully scoped project or just an early idea, we'd love to hear from you. Reach out and we'll get back within one business day.