iOS App wikiwand mindmapper 2016

Hi, i am searching for an app i often used on my ipad4 in late 2014. It was a very nice mindmap of wikipedia´s created by a russian author. It was taken off the Appstore due to copyright problems or sort like in 2017 (?).

Does anyone know it's name or does anyone have a sortlike app what combines all wiki's ?

Thanks a lot.