 Even before Amica's existence, the fans from Wronki had a fierce rivalry with Sparta Szamotuły, with whom they contest the Szamotuły County Derby, however since 30 May 1976 when Sparta beat Błękitni 10-0 away from home the teams met only sporadically, since Amica went on to play in the Ekstraklasa.Since Amica's disbandment and Błękitni's re-founding the rivalry has been renewed in the lower leagues 

The club also developed a strong rivalry with Dyskobolia Grodzisk Wielkopolski during the Amica years, but since Dyskobolia's similar fate to that of Amica (taken over by Polonia Warsaw) both Błękitni and Dyskobolia have renewed their rivalry in the lower leagues.In its heyday when Amica played in continental competitions their fans had good relations with Servette Geneva and a close friendship with fans of NEC Nijmegen after meeting them in a UEFA Cup game

The club underwent several name changes