You might call it a mess, but I assure you that my apartment is, in fact, very neat. I know where everything is at all times: takeout menus piled next to the phone, clean clothes stuffed in the closet and dirty laundry everywhere on the floor.
For my address book, however, I’m sure you'll approve because I use the app Cleaner+ Delete Duplicate Contacts. It automatically traces all my contacts and deletes duplicated info. On top of that, it also backups everything and includes great filters to make finding info much easier. Normally worth $1.99, today it’s FREE!