" Here is a short blurb about the CopyLess Clipboard Manager," states Jim Hamm. He goes on with more details, " I've used this app for over a year now and can recommend it if you need/want to keep a history of items you've copied to the clipboard handy for future reference. It is simple to use and takes only about 8MB of memory when it's running. I have it open at startup and leave it running all the time." He found it for $6.99.
Today iTunes https://itunes.apple.com/us/app/id416439303?mt=8 has it listed for $1.99.