The app collects no personal data. Visits, which features are used, errors and loading times are counted anonymously, without cookies and without any way of telling who you are, so we know how much the app is used and can make it better.
If you choose a language, the choice is stored in a cookie. The quay you last chose, and the one last nearest to you, are remembered the same way, so the app opens on the right quay. These cookies are used for nothing else.
If you let the app use your location, it is used only on your device, to find the nearest quay and show you on the map. Your location itself is not stored or passed on.