Developer's site is misleading. Does not clean App Caches, Temp Files, App Cookies, but I only discovered this after I paid for the app. Window pops up saying iOS 8.3 does not allow this. Ridiculous since the majority of users are running 8.3, and as other have noted, there are free apps in the iTunes App Store that can do this.
Program takes forever to load. Backing up stalls frequently; have to abort endless process. Unfortunately, major cleaning functions require backups. Does not delete Voicemail messages.
Definitely not worth $20, which I regret paying.