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Web App Development · Leeds · Canarlo, Leeds
A web app development company based in Leeds, building MVPs for the city's fintech and healthtech founders. Real auth, a real data model, UK data residency by construction — from £12,500.
Working in Leeds
Leeds fintech and healthtech founders are building on top of regulated data from day one, so the MVP can't be a throwaway — real authentication, row-level security at the database, and a data map that survives the first investor or auditor question. We build it production-grade because the alternative is rebuilding it in six months anyway.
The Leeds talent market makes this a common ask: a founder who can't yet justify a full engineering hire needs an MVP that a future hire can pick up without a rewrite. We hand over a codebase any competent engineer can read, not a prototype held together by one person's memory.
On-site from Leeds
Same-day on-site anywhere in Leeds and West Yorkshire. City centre, Leeds Dock, the out-of-town business parks — if you're within the ring road we can be there before lunch. Most of the build still runs from our own desks; on-site is for the moments where a room beats a call.
Delivery itself runs remote-first — weekly demos on a real preview URL, readable diffs, UK office hours. The engineer who writes the proposal writes the code and takes the call when something breaks.
What you get
The full detail — scope, process, pricing — lives on the service page. It covers the whole of the UK; /services/web-apps is the place to start.
The key user journey — whatever makes the product useful — built and tested on real data. Not a mockup.
Sign-up, sessions, password reset, TOTP. Per-row security enforced at the database, not just the UI.
The one capability that makes the product worth building, built as a first-class part of the system.
Your Vercel account, your Supabase project, your keys. We deploy and walk off — no agency-held infrastructure.
MVP / Web App from £12,500. Fixed scope, GBP invoicing, no day-rate dance.
See full pricing →Frequently asked
A prototype proves the concept; an MVP proves the business. What we build is production-grade — real auth, real data model, real security — not a throwaway you rebuild once it gets traction.
You do. Your repo, your Vercel account, your Supabase project, your keys. No Canarlo SaaS in the loop. The handover doc names every environment variable, cron job and integration.
Start with discovery — two weeks, fixed fee. One scoping call, a written brief, the load-bearing pieces named and the failure modes mapped before anything is built.
Yes — production-grade and fast aren't in tension if the scope is disciplined. Two weeks discovery, two weeks architecture, then a focused build on the one flow that proves the business. What you get is smaller in scope but built right, not a bigger scope built wrong.
More from Canarlo
Start here
Twenty minutes, UK office hours. If the work fits, we’ll say so. If a different service on this site fits better, we’ll say that too.