CocoaHeads Aachen

About CocoaHeads is an international group devoted to discussion of Apple's Cocoa Framework for programming on macOS and iOS. During monthly meetings, members present on their projects and offer tutorials on various programming topics.

We are the CocoaHeads Aachen Chapter, hosted by the Media Computing and Human-Computer Interaction Group at RWTH Aachen University. We get together for informal short talks and demos, have a pizza, and talk code.

From time to time it happens that we draw prizes sponsored by supporting companies like: JetBrains, dpunkt.verlag, O'Reilly


We usually get together on the last Thursday of each month at 7 PM in room 2222 (see below for directions).

Next Events:

  • Thursday, October 26, 2017 at 7 p.m. in RWTH Computer Science Centre, Ahornstr. 55, 52074 Aachen, Room 2222
  • Thursday, November 30, 2017 at 7 p.m. in RWTH Computer Science Centre, Ahornstr. 55, 52074 Aachen, Room 2222

General Agenda

  • Get-together
  • Discuss developer related news
  • Talk/Presentation
  • Food
  • Discussion
(Duration: approx. 2 - 3 hours)

Joining Us

It's free, but please RSVP! For staying up-to-date with our schedule, there are some options:
  1. Sign up for our low-traffic CocoaHeads Aachen mailing list.
  2. Subscribe to our iCal calendar.
  3. Follow us on Twitter.
  4. Visit our group on facebook or join the global CocoaHeads group.
  5. Check our meetup schedule on

To RSVP, please send Michael a short email. If it's your first time, please also add your Apple Developer ID (so we can share developer-only information), a paragraph about your current Cocoa development skills and interests, and past and current Cocoa projects.


We meet at RWTH Aachen University, in the Computer Science Center ("Informatikzentrum"), Main Building ("Hauptbau"), second floor, room 2222 (accessible through the staircase in the foyer), Ahornstr. 55, 52074 Aachen, Germany (Google Maps).

There is a parking lot in front of the side entrance on Halifaxstraße. Here are some more detailed directions for public transport and cars.

The building will be locked around 7 p.m., so just drop in a few minutes earlier to be on the safe side... If you are late, just call +49 241 80 - 21060 so someone can open the door.

  • Swift Conf (Cologne, Germany): September 6-7, 2017
  • Macoun (Frankfurt, Germany): October 7-8, 2017

Previous Events



  • December 19, 2013: Wine Punch
  • November 28, 2013: Jochen Karl: "iBeacons"
    • Notice: Due to Apple Inc. Developer Programme NDA I cannot publish any code here, please see WWDC 2013 video 307 “What’s New in Core Location” timestamp 36:30 till the end and video 310 “Harnessing iOS to Create Magic in Your Apps” timestamp 27:40 - 48:50 for more information
  • October 31, 2013:
  • September 29, 2013: Welcoming and discussing iOS 7...
  • August 29, 2013: "Hardware Playground"
    • Touch and see the freshly arrived Oculus Rift Development Kit in action while Simon Grätzer showcases Tube Racer!
    • Get your hands on (or off of) a Leap Motion device brought by Jochen Karl
  • July 25, 2013: "Bring your Code"
  • June 27, 2013:
  • May 23, 2013: 5 years CocoaHeads Aachen!
  • April 25, 2013: Thorsten Karrer: "Mac App Store receipt checking"
  • March 28, 2013: "Pitch your App"
  • February 28, 2013: Amin Negm-Awad: Preview of Objective-Cloud
  • January 31, 2013: Max Stottrop: "Searching for Delight" (User Experience, Slides [Keynote, including Videos, 26 MB], Slides [PDF, 5 MB])
  • December 14, 2011: Werner Lonsing: "Augmented Reality" (Slides)
  • November 24, 2011:
    • Joachim Kurz: "Debugging Hands-on"
    • Corinna Baldauf: "Agile Software Development: Scrum, Kanban and Software Craftmanship" (Slides)
  • October 25, 2011:
    • Torsten Kammer: "OpenCL" (Slides, Code)
    • David Linsin: "AppCode" (Demo)
  • September 29, 2011: Stefan Hafeneger: "AV Foundation"
  • August 25, 2011: Thorsten Karrer, Moritz Wittenhagen: "OpenGL Core Profile" (Slides, Code)
  • July 28, 2011: OS X Lion — FAQ session
  • June 22, 2011: "Bring your Code" & WWDC Roundup
  • May 26, 2011:
    • Dominik Stengele: "Multitouch-Events in OS X" (Slides, Code)
    • Joachim Kurz: "Building a Location Viewer to view consolidated.db on the iPad" (Slides)
  • April 28, 2011: Torsten Kammer: "OpenGL on Mac OS X and iOS" (Slides, Code)
  • March 31, 2011:
    • Dennis Lewandowski: "Unit Testing feat. SenTest Framework" (Slides, Code)
    • David Detry: "Creating a Reminder App using Local Notifications" (Slides)
  • February 24, 2011: Manuel Carrasco Molina: Address Book APIs for iOS & Mac OS X (Slides)
  • January 27, 2011: Stefan Hafeneger: Mac App Store
  • August 26, 2010: Manuel Carrasco Molina: XMPP/Jabber and ObjectiveC XMPP Slides
  • July 29, 2010: Newest developments and gadgets for iPads
  • July 1, 2010: Werner Lonsing: Layers and Animation (Slides, Code only by request)
  • May 27, 2010: Stefan Hafeneger
  • April 29, 2010: Dömötör Gulyás: Bonjour/Zeroconf; Trying out the iPad
  • March 25, 2010: David Detry: Optimizing application startup time with Instruments.
  • February 25, 2010: Werner Lonsing: "MapKit" (Slides)
  • January 27, 2010: Apple Keynote about the new iPad
  • December 17, 2009: Stefan Hafeneger: "Aperture TiltShift PlugIn" (no slides and code this time)
  • November 26, 2009: Udo Borkowski: "Ruby & Cocoa" (Slides and Ruby Sample Code)
  • October 29, 2009: Jan Peter Krämer: "Cocoa Reverse Engineering and Mail Plugin Development" (Slides and Code)
  • September 24, 2009: Stefan Hafeneger: "My Summer at Apple"; Kai Brüning: New Snow Leopard Technologies: Blocks, Grand Central Dispatch (GCD) (sorry, no slides this time)
  • August 27, 2009: Thomas Voßen, "CUDA on Mac OS X" (Slides and Sample Code); StuffMC, "iPhone projects"
  • July 30, 2009: Udo Borkowski, "Spotlight Programming" (Sildes, Resources (22MB))
  • June 18, 2009: Werner Lonsing, "QTKit" (Slides, Sample Code)
  • May 28, 2009: Torsten Kammer, "Cocoa Higher Order Messaging" (Slides and Sample Code)
  • April 29, 2009: Stefan Hafeneger, "Scripting Bridge" (Keynote Slides, Sample Code)
  • March 26, 2009: Amin Negm-Awad, "Aspect-Oriented Programming"; Stefan Hafeneger, "Bonjour Demystified" (Slides)
  • February 26, 2009: Kai Brüning, "Unit Tests - Aufzucht und Pflege" (Slides and Sample Code); Stefan Hafeneger, "Cocoa PlugIns" (Slides)
  • January 29, 2009: Udo Borkowski, "Porting a Windows MFC Application to Cocoa" (PDF of Keynote Slides)
  • November 27, 2008: Amin Negm-Awad, "Dispatching in Objective-C" (Keynote Slides); Stefan Hafeneger, "Distributed Objects" (Keynote Slides, Sample Code)
  • October 30, 2008: Werner Lonsing, "GPS: More than WhereAmI" (Keynote Slides)
  • September 25, 2008: Kai Brüning, "Plug-ins for Interface Builder 3" (video to be done, Sample Code)
  • August 28, 2008: Stefan Hafeneger, "Developing multi-touch Applications for Mac OS X" (video to be done)
  • July 31, 2008: Amin Negm-Awad, "Advanced Cocoa Bindings" (video to be done, Sample Code)
  • June 26, 2008: Werner Lonsing, "CoreImage: Digital Arts for Cocoa Developers"; Jonathan Diehl: "iPhone and SQLite" (CoreImage Resources, iPhone SQLite sample code)
  • May 29, 2008: Stefan Hafeneger, "iPhone DataMatrix Reader: from Zero to Hero". (barcode reader Source Code, The People)
  • April 24, 2008
  • ... (meetings started earlier in 2008)

NSCoder Night

We have organized a few NSCoder Night events in Aachen and Cologne recently. These are entirely informal events with no presentations, just a get-together where you bring the project you're working on and talk code with others.

Next Event:

Currently, there are no planned events in Aachen. If you know about some meetups in the greater area, just drop us a note so we can mention them!

Other Activities in the Area

There are more Cocoa events happening in the area than you might think! Here are a few pointers:
Check the worldwide CocoaHeads home page for additional chapters in Germany and elsewhere!

Created by borchers. Last Modification: Thursday 19 of October, 2017 10:13:11 by plagge.

Media Computing Group at RWTH Aachen