"Keeping"? Nobody in their right mind ever trust anything Google says. They broke their own privacy terms and will be audited by the US government for 20 years because of it.
Hope those stupid cleaner apps get taken down for posting fake reviews. Don't believe me, tap and view a generic looking 5 star review for apps like clean master and you'll see that the Google+ accounts have generic profile pictures and absolutely no activity other than reviewing that one app.