Cuida is a free, open-source web app built for families caring for a sick relative at home. It brings together everything you need to know: medical contacts, medication, emergency protocols and caregiver schedules — accessible from everyone’s phone.
It grew from a real need: coordinating a family of ten people around a grandfather with cardiorespiratory failure, continuous oxygen and morphine, supported by a palliative home care team (PADES). When you arrive at the emergency room at three in the morning, you can’t be searching for the GP’s name or which morphine dose he takes. Cuida has it all, one tap away.
The problem with Google Analytics
Most websites use Google Analytics. It’s free, powerful, and has been the standard for years. But it has a hidden cost: it requires a cookie consent banner, it sends data to Google’s servers, and it puts your traffic data in the hands of an advertising platform.
For many projects — blogs, artist websites, independent publishers, small businesses — Google Analytics is overkill. What they need is to know how many visits they’re getting, which pages perform best, and where visitors come from. Nothing more.
The physics, solved on your phone
A pinhole camera has no lens. Just a hole. And that hole dictates everything: the light that enters, the time required, the light captured on film.
The problem is that pinhole physics leaves no room for calculation errors. An effective aperture of f/128 or f/180, combined with the reciprocity characteristics of each emulsion, produces numbers that are hard to work out in your head. Until now.
Some tools make noise. Others simply solve things.
Positivitzador was born from a very specific need: understanding what you’re looking at when working with negatives. No gimmicks, no pointless filters. Open the camera, look… and see the image as a positive.
Designed for darkrooms, workshops, and photochemical processes, this small web app does one thing —and does it well—: invert the image in real time so you can read light, contrast, and composition with clarity.
Technology consultancy by the hour
MalditasMaquinas is an on-demand technology consultancy service for artists, freelancers and small businesses. A merger of two brands with over 20 years of history: MalditasMaquinas.com and MacBCN.com.
The model is simple and clean: clients buy a prepaid block of hours and submit technical queries by email from their private area. No hours, no support. No subscriptions, no monthly commitments.
Distributed and secure backend
All business logic runs on Cloudflare Workers — no central server, no single point of failure. The database is D1 (SQLite distributed across Cloudflare’s global network), sessions are handled with KV, and consultation attachments are stored in R2. Authentication uses magic links with JWT in an HttpOnly cookie — no passwords, no leaks.
Our own website as a first project
If we recommend a way of working, the least we can do is apply it to ourselves.
LinuxBCN.com is the project where we have implemented, tested and refined every technical decision we later bring to clients: lightweight architecture, privacy by design, real accessibility and data sovereignty. It’s not an artificial example — it’s the system we use every day.
The problem
The previous website was a WordPress. Functional, but:
Clear analytics for static websites
A web analytics dashboard that shows exactly what you need to know
about your visitors. No noise. No cookies. No subscriptions.
The problem
Conventional analytics tools — Google Analytics and similar — are built
for marketing teams that want aggressive tracking.
For a local business, a school or an association,
they’re excessive, invasive, and often blocked by browsers.
GoatCounter is a free, privacy-respecting alternative.
But its interface isn’t immediate: you have to interpret tables,
navigate through panels, and the workflow is slow and manual.