Co-parenting in the Netherlands. Easily organized.
The co-parenting app for parents in the Netherlands. Plan calendars, appointments and everything around your children in one calm place — without endless back-and-forth.
Available for iPhone and Android. Designed for the Dutch co-parenting situation — start today with more calm and clarity.
Latest articles
Splitting costs as co-parents: what the parenting plan covers (and what it doesn’t)
"Who's paying for the new football boots?" "I already covered the school trip, how do we settle that?" "Is that actually in the parenting…
Meet Harmoneaz at the Mediationcongres 2026
November 27, 2026 · Spant!, Bussum We have some news: on November 27, Harmoneaz will be at the Mediationcongres in Spant!, Bussum. This is…
Co-parenting without conflict: why business-like communication works
"You're late again." "I told you that already." "Why don't you ever read my messages?" For many co-parents, communication feels like a minefield. A…
How it works
Plan and share without the hassle
The calendar uses colour coding to clearly show who has care of the children on which day. Care schedules are easy to set up, and temporary schedules can also be created for when a swap is needed or arrangements are temporarily different — for example during school holidays. Day-to-day events, such as a dentist visit, or weekly recurring events, such as football training, can also be added and are highlighted in the calendar.
Quick overview
See at a glance what's on your plate today.
Collaboration
Share tasks and the calendar with the other parent and/or children in a few taps.
More calm
Less mental load, more room for what truly matters.
How it works
Keep track of agreements with ease
Divorce comes with a lot of paperwork. Many arrangements are recorded in a parenting plan — often quite a lengthy document, making it hard to quickly look up who had first choice when scheduling this year's summer holiday. To make the most important practical agreements easy to find, they can be stored directly in the app. That way, the big binder can stay on the shelf. In the Netherlands, a parenting plan (ouderschapsplan) is legally required when separating. Harmoneaz helps you keep the key agreements from that plan at your fingertips.
I'm a co-parent myself. Scattered notes, re-aligning arrangements every time, tracking child support manually, forgetting to send things along — I ran into all of it. That's why I built Harmoneaz: everything around the kids in one place, for both parents in the Netherlands.
Jeroen — Co-founder Harmoneaz