Why is the apps tab not showing under my settings list in my itunes library?

Hello. I recently made a ringtone on a ringtone app on my phone and I was trying to download it to my phone through my itunes account. However, when I click on my device in my library, and the settings list comes up, it does not list "Apps" as an option. It only lists: "Summary", "Music", "TV Shows", "Photos", "Info", and "File Sharing". The ringtone app says I need to click on the apps tab. Where is it? Why is it gone? Is it because of the new itunes update? My library used to list the apps that I had, but there are absolutely no apps on here now; only music, movies, tv shows, podcasts, and audiobooks. This is really frustrating me. Please help me asap!