When we launched DragonBox (Algebra) in May 2012, there were 2 versions: DragonBox(3$) and DragonBox+ (6$). We quickly took the decision to discontinue the lite version because

• most customers purchased the + version
• those buying the non plus ended up purchasing the + after finishing the first one and ended up getting disappointed as they had to replay the same content to start the game (DB+ was DB with extra levels)