Harmoneaz is made by MJoy-IT, a small start-up from Rotterdam run by Mandy Lokken and Jeroen van Os. We are both co-parents. We build apps that make everyday life simpler. Harmoneaz was the first.
Why Harmoneaz exists
I am Jeroen van Os, and I am a co-parent myself. Scattered notes, agreements we had to re-align every single time, child maintenance I tracked and calculated by hand, things we forgot to pack: I ran into all of it.
When I looked for an app to help, I mostly found apps from abroad. Different terms, different habits, and nothing with the Dutch indexation of maintenance. So we built Harmoneaz: everything for the kids in one place, for both parents at once, and made for how co-parenting works in the Netherlands.
How we work
Practical, not emotional
Harmoneaz helps with what needs arranging: the care schedule, handover days, agreements and costs. So there is less to discuss and more time left for the children.
For both parents
Inviting the other parent is always free. The subscription is per parent, so each decides for themselves.
Your data stays yours
No ads and no tracking. Data is stored on servers in the EU and only the people you invite can see it.
Together with professionals
Mediators and other divorce specialists use Harmoneaz in the specialist portal, so parents get off to a good start after the separation.
Who we are
- Jeroen van Os — Co-founder. Builds the app and writes the articles on this site.
- Mandy Lokken — Co-founder. She is a co-parent too, so she knows from experience how much there is to arrange.
The company
MJoy-IT, based in Rotterdam, the Netherlands · Chamber of Commerce (KvK) 42007160
Our second app is Domeaz: everything about your home in one place. domeaz.app
