Old iOS App Data

Hello,

I bought a Macbook Pro and transferred all of my Music folder from my PC laptop to my Mac, and loaded the iTunes Library file and all my playlists are fine. The thing that I noticed though is that when I look in my iTunes folder in 'Mobile Applications,' there are multiple versions of most apps and the total space used by this folder is 57gb. Is there a way to clear out the apps that I don't use and only keep the up to date versions of apps? I found this link that shows a method with iTunes 11 to clear out extra data, but didn't know if this would still work with iTunes 12. Thank you in advance for your assistance!