Alcitron · Custom web applications
The web application your business needs, built to fit
We design, build and maintain web applications for businesses and organisations: booking, accounting, certificates, portals for your clients. They work on the phone and the computer, in the language of whoever uses them, and they can be found in search engines.
A written quote, without obligation.

What we build
Applications that replace the spreadsheet, the notebook and the back-and-forth of messages with one system the whole team uses.
- Systems for the daily workSchedules, inventory, till, invoicing and internal dashboards, with the right access for each person on the team.
- Portals for your clientsOnline booking, client areas, document verification and PayPal payments, in your brand's look.
- On the phone, without an app storeWeb applications that open in any browser and install on the phone's home screen.
- In each user's languageText, dates and currencies in the languages you need; our own products publish in up to fourteen.
- Found in search enginesFast public pages with structured data, a sitemap and described images, so your clients arrive by searching.
- Hosting and maintenanceIf you wish, we host the application, keep backups and keep it up to date after delivery.
Our work
Products we design, build and run
Each one is live and in use. They are the best sample of how we work: what you see on these screens is what you can ask for your business.
Booking and till for barbershops
Corte y Barba
A schedule per barber, online booking, a queue for walk-ins, client cards and the end-of-day till, in fourteen languages.

Double-entry bookkeeping
Aconta Online
Journal, general ledger, trial balance and statements that always balance; a recorded entry is never edited.

Verifiable digital certificates
Emitcert
Institutions issue diplomas and certificates with a QR code, in bulk from a spreadsheet, with a public verification page.

Short, safe links
Acortarenlace
A link shortener that shows where each link leads before it opens and lets anyone report a dangerous one.

How we build
- Fast and safe from the code upWe write in Rust, a language that rules out whole families of memory bugs and answers fast on a small server.
- Tested before every deliveryAutomated tests walk through every flow, on the phone and the computer, before a change is published.
- Readable by everyoneContrast and type size checked on every screen, on the phone and the computer, in light and dark mode.
How we work
We talk
You tell us what you need in the form, and we reply with the questions that help us understand your business.
Proposal and quote
We send you in writing what we will build, in which stages and what it costs.
Building in stages
Each stage ends with something you can open and try on your phone and your computer.
Going live
We publish the application on your domain, with its mail and its pages ready for search engines.
Ongoing care
After delivery, maintenance and improvements, if you wish.
We also offer
Professional email on your business's own domain
Alcitron Mail: mailboxes, aliases and forwards on your own domain, with webmail and the SPF, DKIM and DMARC records ready to publish.

Before you start
How much does a custom web application cost?
It depends on what it has to do. After we talk, we send you a written quote, without obligation, with the scope and the stages.
How long does it take?
The proposal includes a schedule by stages; each stage ends with something you can try.
Does it work on the phone?
Yes. It works in the browser of a phone, a tablet or a computer, and it can be installed on the home screen.
Can you host and maintain it?
Yes, if you wish: hosting, backups, updates and improvements are proposed as a separate service.
In which languages?
In the ones you need. Our own products publish in up to fourteen languages.
Tell us what you need
We reply by email with our questions or a written quote, without obligation.