Swiss data protection
- Appointments on Swiss servers
- Photos encrypted, deleted automatically after the appointment
- No tracking, no advertising cookies
For your clients’ websites: practices, therapy, coaching and anyone who takes appointments. Bookings stay in Switzerland, photos are encrypted and nobody gets tracked. Zytfenster is free; you build it in and charge for the setup.
You take appointments yourself and don’t want to install anything? I’ll set it up for you.
Try it out. This is the real form of a sample practice, ending with the email that would go out.
Nothing is saved or sent, promise.
Most booking tools want to measure, sell and follow up. Zytfenster wants the people who book to feel they’re in good hands. And it wants everyone who takes appointments to spend their time on their clients rather than on software.
“Bookings stay in Switzerland, photos are encrypted and deleted after the appointment, and there’s no tracking.”
The patient uploads a photo before the appointment. Afterwards, it’s deleted.
First consultation and follow-up appointments, with a buffer between treatments.
Video call, with the link right in the confirmation.
Treatments of different lengths, with a reminder the day before.
Initial consultations and meetings, as requests if you prefer. You confirm, and the appointment is set.
Support sessions and meetings with your own clients, online or in person.
All appointments at a glance, absences in two clicks, your own wording for every email. Try it yourself, no login needed, with sample appointments.

Zytfenster runs on ordinary hosting with PHP and brings its own database. You bill your clients for setup and support.
<!-- Knopf «Termin buchen» auf jeder Website --> <a href="https://termine.praxis.ch/?k=sonnenhalde" data-zytfenster-button data-k="sonnenhalde"> Termin buchen </a> <script src="https://termine.praxis.ch/embed.js" defer></script> <!-- oder in WordPress --> [zytfenster art="knopf" text="Termin buchen"]
Zytfenster costs nothing, with all features and all updates, for as long as you like. What I can’t offer for free is my time. If you need help, you pay for it. That’s all there is to it.
Zytfenster is free. You only pay for what takes work: installation, hosting with me and support.
You install Zytfenster yourself. It’s easier than you think.
Fixed price. I set up Zytfenster on your hosting and build it into your website.
plus a one-off setup fee of CHF 290
Zytfenster runs on my Swiss hosting at app.zytfenster.ch. You just share your booking page. The first year comes to CHF 410, then 10 francs a month.
All prices excluding VAT. Support for all options: CHF 180 an hour, billed in 15-minute increments. I fix bugs in Zytfenster itself free of charge, for everyone.
My name is Arto Steiner, and I’ve been building websites for Swiss SMEs and self-employed professionals for many years. Zytfenster came about because a web designer was looking for a booking tool for her client: simple, with photo upload and with proper data protection. She couldn’t find one.
Zytfenster is a small product of my own. If you write to me, I’ll answer you myself.
And what if I’m not around one day? The code and data stay with you, and Zytfenster keeps running. There just wouldn’t be any more updates.
At walterlernt.ch I teach courses, at arto.ch you’ll find my web design work, and at kopfgerecht.ch I help people learn.