Uber Barcelona. Uber ride-hailing - ridesharing service. Uber operates in Barcelona but not in the same way as other markets. It works as a taxi app. Taxi drivers forced Uber out of the market with many protests, sometimes violent. Uber is now back in Barcelona but instead of having its own Uber drivers, the app lets taxis use its software at no cost. Not all Barcelona taxi have chosen to use the app however and Taxi organisations continue to protest against Uber.