Seventh Star was rated excellent by AllMusic and The New Rolling Stone Album Guide.
However, critic Eduardo Rivadavia of Allmusic has given Seventh Star a mixed to positive review, praising what he saw as the "fiery tunefulness" that makes "aggressive hard rockers like "In for the Kill," "Turn to Stone," and "Danger Zone" uncommonly catchy". 
Some retrospective critical assessments of the album have been negative; for example, The New Rolling Stone Album Guide rated the release only two out of five stars. 
