It is estimated that around 29,000 children and young people in Germany are homeless and have to fend for themselves day in and day out. But many have a smartphone. The organisation KARUNA helps young people who don't have a roof over their heads with a free online offer: with a click users can find more than 3,000 contact points, whether for a place to sleep, mobile showers, a hot meal, or medical assistance. The interactive map exists both as an app and a browser version, in German, English, Arabic, and Polish. During the development children and youth could voice their wishes, from easy-to-understand icons to low data volume consumption.