Custom Website Development
A marketing site that loads instantly, ranks, and turns visitors into enquiries, on Astro or WordPress, at a fixed price.
Fixed scope and price agreed up front. No obligation after the call.
- You own 100% of the code
- Fixed scope and price up front
- Not happy after milestone one? Walk away, owe nothing
Work like this, already shipped
CompletApp
Our own Astro portfolio website: a fully static, bilingual studio site engineered for speed and technical SEO from the ground up.
View project
Manifestream
Premium waitlist landing page for a manifestation app in the making: double opt-in email capture, an SEO content engine and near perfect Lighthouse scores.
View projectWhat you get
- A fast, high-converting custom website
- Astro or WordPress, chosen to fit how you work
- Clean SEO foundations built in from the start
- An editing setup so you are never stuck for updates
- Fixed scope and fixed price agreed before we start
- A direct line to the person building your site
What is custom website development?
Custom website development means designing and building a website around one business and its goals, instead of adapting a ready-made template. It is for companies whose site has to bring in enquiries, sign-ups, or sales. CompletApp is a Budapest-based product studio that builds custom marketing sites on Astro or WordPress, working in Hungarian and English at a fixed scope and a fixed price.
You get a website that loads fast, looks the part, and is built to turn visitors into customers, not just a pretty page that sits there. We tune it for speed and search from the ground up, because the job of your site is to win business, and every decision we make serves that.
A slow, generic site quietly costs you leads every day, in bounce rate, in rankings, in lost trust. We build the opposite: sites that feel premium, load almost instantly, and guide visitors toward the action you want them to take. Performance and conversion are designed in from the start, not patched on at the end.
What kinds of websites do we build?
We build the full range of marketing sites: landing pages, multi-page company sites, product and portfolio sites, and content-rich sites with blogs and resources. We take the project from design through to a live, fast, search-ready website, so you have one team responsible for how it looks, how it performs, and how it ranks. One boundary worth knowing: anything with a login, user accounts, or a dashboard is a web application, and that belongs to our web app development service.
We start from what the site needs to achieve, the leads, sign-ups, or sales you want it to drive, and shape the structure, copy layout, and calls to action around that goal. The result is a site that works for your business, not just a portfolio piece.
Astro or WordPress: which is right for your site?
We build on the platform that fits how you operate, and we help you choose before any work starts. The difference in short:
| Question | Custom Astro site | WordPress |
|---|---|---|
| How pages reach the browser | Static HTML with almost no JavaScript | Generated by the server, with theme and plugin code |
| Editing content | Through us, or in a content management system we connect | Your team edits and publishes in a familiar editor |
| Upkeep | No plugins to keep updated | Regular core, theme, and plugin updates |
| Better choice when | Speed and search visibility matter most, and a developer stays involved | Your team publishes often and wants to work without a developer |
Either way we build it properly: a WordPress site still gets careful performance work, and an Astro site still gets an editing setup, so you are never stuck.
Tuned for speed and SEO
Fast sites rank higher and convert better, so we treat performance as a feature. We ship lean, well-structured pages, optimize images and assets, and build the clean, semantic markup and technical SEO foundations that search engines reward. Your site arrives ready to be found and ready to perform, rather than needing a rescue project six months later.
Our two own Astro builds are measurable. Manifestream, a waitlist landing page, scored 97 for performance and 100 for SEO, accessibility, and best practices on both mobile and desktop in Google PageSpeed Insights on 27 August 2026, and its waitlist has passed 100 confirmed subscribers. This site, completapp.com, scored 99 on desktop and 90 on mobile for performance on the same day, with 100 for the other three measures on both.
How we work
We agree the full scope and a fixed price before we begin, so you know exactly what you are getting and what it costs. We work in short, reviewable stages, so you see the design and build take shape and can steer it. You get a site you are proud of, delivered without the drift and surprises that plague open-ended projects.
