Jeroen Leenarts of CocoaHeadsNL will introduce you to the CocoaHeadsNL apps for both iOS and tvOS. They are both open source and open to community contributions. Jeroen explains how they are built and the technologies involved. This talk was recorded on May 2nd, 2018 during en extra CocoaHeadsNL meetup, this time at the office of Moneybird in Enschede.