There is taiga.io located in Spain and open source. I'm not sure if there's an official mobile app, but there are at least one unofficial one (the mobile version of the webapp is very well done otherwise). I've been using it for a collaborative project and I like it more than Trello.
There is taiga.io located in Spain and open source. I'm not sure if there's an official mobile app, but there are at least one unofficial one (the mobile version of the webapp is very well done otherwise). I've been using it for a collaborative project and I like it more than Trello.