Web app development for startups

A web app isn't a website with extra JavaScript sprinkled on top. It's software your users log into, that holds real data, and that they come back to repeatedly to do actual work — a dashboard where a founder checks their metrics, a portal where a client uploads files and tracks a project, an internal tool where a small team manages inventory instead of wrestling a spreadsheet. That distinction changes almost everything about how it gets built.

Marketing sites exist to convert a visitor into a lead once. Web apps exist to be opened dozens of times by the same person, which means the bar for speed, reliability, and how the interface holds up once it's full of real data — not five rows of demo content — is a different bar entirely. A page that looks good in a mockup and a screen that stays usable after a user has three hundred records in it are not the same design problem.

That's the work we specialize in: authenticated, data-driven products — SaaS dashboards, client portals, internal tools that replace a shared spreadsheet or a chain of emails. If what you actually need is a fast, well-written marketing site instead, we'll say so upfront rather than building you a web app's worth of infrastructure for a page that just needs to load fast and convert.

Every web app we build starts from the same question an MVP does: what's the one real workflow this needs to support well, before anything else gets added. See our MVP development page for how we apply that same scoping discipline when the web app is the entire first product, not an addition to something that already exists.

Every web app we build runs on the same stack, for the same reason: it lets a small, senior team ship production software without reinventing infrastructure for each client. We picked each piece for a specific cost or reliability reason, not because it's trendy.

• Next.js — the App Router and server components handle routing, data fetching, and rendering in one framework, so we're not stitching together a router, a build tool, and a rendering strategy by hand.
• React — the component model behind the entire frontend, with a mature ecosystem that means we're rarely the first team to hit a given problem.
• Tailwind — a utility-first design system that keeps spacing, color, and type consistent from the first screen to the last, without a separate CSS file sprawling out of sync with the components it styles.
• Supabase / Postgres — auth, storage, and a real Postgres database behind one API, the same backend we run for mobile apps, so a web app and a future companion app can share the same data layer instead of two.
• Vercel — hosting and deploys built around Next.js specifically, fast to ship to and cheap to run at the traffic an early-stage product actually gets.

This stack is also just cheap to run. A typical early-stage web app on Vercel's free or entry-level tier plus a Supabase project costs a fraction of what a comparable app cost to host a decade ago, which matters when you're trying to keep a startup's burn low before it has revenue. We're honest about that tradeoff too — at meaningful scale, hosting costs change, and we'll tell you when that inflection point is coming instead of letting a surprise bill be the first sign.

FadeChats, our privacy-first chat product, has been live as a web app since 2026 — proof this stack ships real, running software, not just client demos. There are no accounts and no signup: you open a single-use invite link and you're in a conversation.

Messages travel peer-to-peer over a WebRTC data channel directly between browsers, and our servers store zero messages by design — the privacy promise is architectural, not a policy that could quietly change later. It ships in five languages — English, Spanish, French, German, and Portuguese — the same localization approach behind this page. See the full product roadmap →