I've just published Disk Health on Mac App Store: It manages safely iTunes, Photos and iPhoto libraries to preserve the integrity of the library itself.
It's a disk cleaner and duplicates finder with lot of features like old files and big files detection, parametric search allowing you to choose file size, file date and combination of both, fast duplicate detection algorithm with advanced 512 bit hash to avoid false positives.
I'll love to hear what do you think about it.