My current choice for worst UI / UX also is from a public transportation app, to be specific the latest version of the public transportation app the Rhine-Ruhr

My current choice for worst UI / UX also is from a public transportation app, to be specific the latest version of the public transportation app the Rhine-Ruhr area (a metropolitan area roughly the size of Greater London in terms of inhabitants. One would think they had at least some sort of quality assurance for a product targeting such a large number of customers but it seems they don't ...): https://itunes.apple.com/de/app/vrr-app-fahrplanauskunft/id423533479?mt=8 https://itunes.apple.com/de/app/vrr-app-fahrplanauskunft/id4... The new UI / UX is glossy, somewhat unique, seemingly modern and ... completely useless. You can't even perform the most basic tasks anymore like finding a route from A to B. In terms of best UIs the previous version of Headspace (both on mobile and the web) was fantastic. The latest version is still good though not quite as good in my opinion. Trello has a great UI, too. It's simple and easy to grasp with no unnecessary frills.