You could have downloaded LoL Item Customizer 2.0 for Mac from our software library for free. LoL Item Customizer for Mac lies within Games, more precisely Strategy. This free software for Mac OS X is a product of Lol mac team.
From the developer:
This application provides an easy way to change recommended items for any champ.
LoL Item Customizer is a program used to update the default Recommended Items for each champion. Recommended Items display in game and are updated at infrequent intervals by Riot
You may want to check out more software for Mac, such as Lola's ABC Party, Lola's Learning World - Math Edition FREE or I Spy With Lola: A Fun Clue Game for Kids! FREE, which might be related to LoL Item Customizer.