
PijnProfessionals
2026A course calendar became a platform for pain care, with a way in for patients and a way in for the professionals who treat them.
pijnprofessionals.heifen.nl ↗We take websites that hold companies back and make them fast, clear and worth visiting.
Then we use what we learn to build our own companies.
Three sites we built, and the one thing each of them had to get right.

A course calendar became a platform for pain care, with a way in for patients and a way in for the professionals who treat them.
pijnprofessionals.heifen.nl ↗
Drag an unpaid invoice onto the page and the collection starts. No result means no cost, and the whole principal stays with the sender.
incasseren.com ↗
One AI-native workspace where a law firm's cases, mail, documents, hours and invoices finally know about each other.
legalpal.nl ↗Companies Heifen is building. Each one has a page with what it does and what changed recently.
Uptime and change alerts for small business websites.
Latest: Visual diff alerts ·
Bookkeeping that reads your inbox so you do not have to.
Latest: Private beta with eight freelancers ·
Brand kits for companies that do not have a designer yet.
Latest: Sketching the first flow ·
A calm waiting room for online appointments.
Latest: Paused ·
You have a site. It is slow, dated or hard to use. We rebuild it around the one thing it needs to do.
For companies starting from nothing, or from a name and a Word document.
We build our own products and sometimes partner with founders who have the problem but not the team.
Heifen started in 2019 as a one-person portfolio. It became a studio when the portfolio kept turning into client work.
Three short steps. We reply within two working days, usually with a few questions and a suggested call.
Prefer email? hello@heifen.example