app question/request

[zakphi]

since this phone has so much storage, lately I have been on a downloading app frenzy. a lot of apps i have installed during this frenzy have been uninstalled. i am starting to sense my phone slowing down and not acting as smooth as it should be. i am wondering what is the best app to clean up all the leftover files the uninstalled apps left behind. my phone is pure stock, not rooted. any help will be much appreciated. thanks.