Production web platforms, in code. A Singapore studio building dashboards, internal tools, design systems, and headless commerce for clients worldwide. Brief, build, ship.
Built in code. Built for impact.
Web app development means software that runs in the browser. It holds user logins, data, and transactions, and behaves like a tool people come back to every day. We build on Next.js and React, from a Singapore studio, for clients worldwide. Most projects have a working prototype inside four weeks.
Four shapes of custom web app. Pick the one the business needs. We build all four.
Analytics dashboards, admin consoles, reporting surfaces. Real data, role-based access, exports that print. Designed for the people who run the platform.
The internal tools your team actually uses. The spreadsheets and side-scripts go away. One interface, the right shortcuts, the data already loaded.
A design system that survives a real product. Colors, type, spacing, and components in one library. One source of truth across web, marketing, and product.
Headless commerce. Custom storefront, custom checkout, the catalog wired to whatever runs it. Fast to load, fast on the next click.
Four phases. Two-week sprints. No hand-offs between design and build. Working software you can click every fortnight.
First call. Tell us the platform. We'll tell you what's possible. And what's better.
We map the screens, the data, and the systems. The blueprint settles before the first line of code.
Design and engineering happen together, not in handoff. Two-week sprints. Working software you can click every fortnight.
Production-grade. Cloud-native. Handed off with the tuning knobs. Thirty days of optimization included.
Investment, timeline, and scope at a glance. The brief call settles the rest.
A real app, scaffolded and shipped.
Pilots, MVPs, internal v1s. Teams who need a real working app to test the thesis before committing to the full build.
Full-stack platform, shipped.
Member portals, dashboards, booking systems, content platforms with real users and real data.
Multi-tenant systems, supported.
SaaS platforms, marketplaces, internal ERP and CRM systems with complex tenancy and integration needs.
Not sure which tier? Tell us the platform shape and the launch window. We match the build.
Common questions. If yours isn't here, email us.
Web app development is the engineering of production web platforms in code. Not page builders, not template themes. The output is a system with a data model, authentication, access controls, and a tested deployment pipeline. Typical examples include dashboards, internal tools, design systems, member portals, and headless commerce storefronts. &7 is a Singapore web app development studio building on Next.js 16, React 19, TypeScript strict, and Tailwind 4. Every build ships with auth, observability, and structured logging.
Yes to both. &7 is a Singapore-based web app development studio. We work with founders, brands, and agencies in Singapore, Southeast Asia, Australia, the United States, the United Kingdom, and Europe. Async-first delivery, two-week sprints, working software every fortnight. Time zones are not a blocker. For Singapore-based clients, in-person workshops at our studio are part of the engagement.
A website is mostly content. Pages, images, copy, the occasional form. A web app is a system. It holds state per user, persists data, enforces permissions, integrates with other services, and runs business logic in real time. Examples of web apps include a customer dashboard, an internal admin tool, a headless storefront, and a member portal. If the page changes based on who is logged in, it is a web app, not a website.
Build custom when the workflow is the differentiator. If the business runs on logic, permissions, or integrations that no SaaS tool models cleanly. Build custom when SaaS pricing scales faster than the value, typically past 50 seats. Build custom when data ownership matters. Use SaaS when the workflow is standard and the business case is speed. &7 helps clients pick during the brief call, including saying no when SaaS is the right answer.
Starter ($10–20k, 4–6 weeks) is a scaffolded full-stack app with auth, database, two to four core screens, and a lightweight admin. Built for pilots, MVPs, and internal v1s. Application ($35k+, 12–20 weeks) is the full production platform with roles, payments, observability, and a real admin dashboard. Platform ($60k+, 20–40 weeks) adds multi-tenant architecture, SSO, advanced integrations, and ongoing revisions. We help you pick during the brief call.
Timelines depend on scope and include buffer for revisions. Starter apps run 4–6 weeks, full applications 12–20 weeks (3–5 months), platforms 20–40+ weeks. Two-week sprints, working software every fortnight. Discovery, design, build, test, ship, optimize.
Next.js, React, TypeScript, Tailwind. PostgreSQL or Supabase for data. Auth via Clerk, Auth.js, or custom. Hosting on Vercel by default, AWS or Cloudflare when the workload demands it. Always production-grade. No tutorial code.
Yes. Mobile-first responsive design. Keyboard navigation, focus management, WCAG AA contrast on every surface. We respect prefers-reduced-motion. Tested on real devices before the build leaves our hands.
Thirty days of optimization ships with every build. Beyond that, we offer monthly support retainers covering monitoring, performance, feature work, and on-call response. Or hand the codebase to your team with a documented architecture and a session of pairing.
Yes. We audit the codebase, scope a stabilization or modernization track, and quote it as a project. Common starting points are migration to a current Next.js, performance work, design system extraction, or replacing a legacy backend.
Send the platform shape, the launch window, and what the system needs to do. A spec and a number come back inside a week. From our studio in Singapore, for clients worldwide.
Or see the other services →