What is Cocoaheads?

A monthly meeting of iOS and Mac developers in the Netherlands and part of the international
Every month we organize a meeting at a different venue including food and drinks sponsored by companies.
You can now download our app to stay up to date


  • March 6, 2008

    Release first iOS SDK

    The SDK was released on March 6, 2008, and allows developers to make applications for the iPhone and iPod Touch, as well as test them in an "iPhone simulator".

  • Dcember 10, 2008

    First Cocoaheads meetup

    On december 10th, 2008 the first CocoaHeads meetup in Amsterdam was held.

  • November 7, 2013

    Transition to Jeroen Leenarts

    Previously run by Cathy Shive and Peter Robinett the organisation of CocoaHeads changes to Jeroen Leenarts.

  • June 2, 2014

    Started using meetup

    Jeroen Leenarts, together with Niels van Hoorn and Bart Hoffman switch to the use of Meetup.

  • February 2, 2015

    Registered as a non-profit foundation

    Jeroen Leenarts, together with Niels van Hoorn and Bart Hoffman register CocoaHeadsNL as a non-profit foundation at the dutch chamber of commerce

  • May 24, 2015

    Launched our open-source app

    What fun would a community of App Developers be without our own open-source app?

  • June 21, 2016

    Sidney joins the team

    Our community keeps on growing. We are getting more and more sponsors. We needed more capacity. Sidney de Koning joins as an organizing member

  • Be Part
    Of Our

Our team

Jeroen Leenarts


Next to organizing Cocoaheads Jeroen works at Nyon as senior iOS developer.

Niels van Hoorn


Niels is a full stack developer at Framer Studio, a Dutch startup improving the way we design apps.

Bart Hoffman


Bart works as a freelance developer for iOS and Mac.

Sidney de Koning


Sidney works as an iOS developer at the Capitals.