Treevoxa offers web application development services for businesses that need more than a brochure: customer portals, dashboards, booking and ordering systems, online stores and internal tools that staff use all day. For company websites and landing pages, see website development. The same team builds and runs six software products, so we treat every site as software: fast to load, easy to update, and connected to the systems behind it. Every project is custom web application development, built around your users rather than a template.
Web apps development services we offer
- Customer portals where clients log in to see orders, documents, invoices or payment plans.
- Dashboards and internal tools that replace spreadsheets with screens built for the job.
- Booking, ordering and quoting systems with payments and notifications.
- Online stores with products, checkout and delivery, connected to your stock where it matters.
Web applications we run ourselves
- PharmaFlow gives every pharmacy its own online store on the same stock as the counter, with its own name, logo, colours and, on higher plans, its own domain.
- DealWisp gives small businesses a branded offers page under their own domain, with themes and click analytics, run from a central operator dashboard.
- RE-ERP and MatrixHR are full web applications with roles, approvals, reports and exports, used every working day.
Built like software
- Pages are server-rendered where it helps, so they load quickly and search engines can read them.
- Every page has its own title, description and structured data, so search engines and AI assistants understand what it is about.
- Forms and payments are tested end to end, so enquiries and orders arrive.
- Accounts, roles and permissions are designed in, not added later.
- When the app needs to talk to another system, it is built to, through a documented API. See API development services.
Tech stack for web application projects
| Part | What we use |
|---|---|
| Front end | React, Next.js, TypeScript, Tailwind CSS |
| Back end | Node.js (NestJS, Express), Python (FastAPI, Django) |
| Data | PostgreSQL, Prisma, Supabase |
| Services | Stripe and Paddle payments, Amazon S3 file storage, email delivery, analytics |
| Hosting | Vercel, containers on your cloud, or hosting managed by us |
See ReactJS development for front-end work in more detail.
How a web project runs
- Discover. Who uses it, what they need to do, and what you want them to do next.
- Structure and content. The pages and screens, what goes on each one, and who writes it.
- Design. A design that fits your brand, checked on phones first.
- Build and review. You review the site or app on a preview link as it is built.
- Launch. Domain, SSL, analytics and search console set up, and a plan for updates.
Engagement models for web application work
- Fixed scope for a defined site or app, paid per milestone.
- Dedicated developer for a web app that keeps growing, billed monthly. See dedicated software development team.
- Hourly for changes and support.
Websites for marketing agencies
Agencies can bring us their client websites and web apps while they keep the strategy, the content and the relationship. If that is you, see how we work as a white-label development partner.
What a web application costs
The number of screens, the user roles, the integrations and the content decide the price more than anything else. Our custom software development cost guide explains the drivers and how to compare quotes, and software developer hourly rates compares what teams charge by region. We quote per project, in US dollars and in writing, and reply to a brief within one business day.
Do you work with marketing agencies?
Yes. We build websites and web apps for agencies to deliver to their clients, with scope, responsibilities and branding agreed for each engagement.
Working across time zones on web application projects
We work remotely with a daily overlap window in your working hours, agreed before the project starts: usually your morning for US teams and the afternoon for UK and European teams. A new preview is usually waiting when your day starts.
What to send us for a web application quote
Your current site if you have one, two or three sites or apps you like and why, the pages and screens you think you need, who will write the content, and when you need it live.