KVAS — WEB APP BUILDER, PRAGUE
Web apps built plain enough for clients, intuitive and clean for users. This site is the proof.
3 custom builds, live
Custom build for malamoudra.cz.
Problem
A small brand needed a site that read as carefully made as the work it represented — not a template every visitor had seen a hundred times before.
Built
A custom front end built to the brand rather than around a theme, with the layout and pacing chosen for the content instead of inherited from a page builder.
Outcome
A site that loads quickly, says what it needs to, and is straightforward to keep current.
Custom build for immowerk.cz.
Problem
immowerk.cz is the Czech site for the Prague branch of a German real-estate group, speaking to an international audience that mostly does not read Czech. It needed to present the branch in several languages and let the staff publish their own property listings — on shared hosting with no Node runtime and no database.
Built
A multilingual brochure site built as a static export across six locales, paired with a thin self-service admin so the branch can add and edit listings without a developer. The admin and a small data API run as plain PHP on the same shared host, with the listing data kept as flat files and images alongside it.
Outcome
Staff publish and update listings themselves, and new entries appear without a rebuild. It runs on ordinary PHP/Apache shared hosting, which keeps the site cheap to host and entirely the client’s to maintain.
Custom build for avantisimo.cz.
Problem
Avantisimo brings several premium European bathroom and surface brands under one roof. The client wanted a first site that made those makers read as one curated collection and sent visitors on to each of them — with visual quality mattering more than site architecture.
Built
A hand-built static landing page in plain HTML, CSS and JavaScript: the logo-led hero, a brand showcase with click-throughs to each maker, the manifesto and a contact block. Czech first with an English version alongside, and the client’s photography run through an image pipeline for modern formats.
Outcome
The site went live on the client’s existing shared hosting, and the client’s rounds of copy and layout corrections were turned around on the live site.
3 projects · 3 livetotal 3 · live 3
Custom full-stack systems a team can own and run day to day — typed admin, real data, no developer on call.
See the workSites built to the brand, not around a template — chosen for the content, fast to load, easy to keep current.
See the workLean builds that ship — self-hosted, honest about cost, the kind of thing this very site is.
You're looking at itThe list is a starting point, not a fence — the right build depends on who you are and what you need.
This site is the portfolio piece. Execution over enumeration.
I'm Matyáš Kasalý — a self-taught web app builder based in Prague. I lean on modern AI tooling as leverage — to work faster and ship higher-quality output for what clients actually need — while the building, and the judgment behind it, stays mine. I believe the internet should stay decentralized, and that owning your own servers is the responsible way to build: I'm here to provide that kind of independence and security.