Iphone app for repeating voice notes?

Hi. I recently heard that recording something and listining it all night long subconsciously helps you remember all of it. Well, i have an iphone and i was looking for an app that basically keeps repeating the voice note, like we do for a song (sorry, i forgot what that option is called). I mean it keeps on repeating it by itself again and again all night, only that particular note.
Please help me if you can. And explain how to do it too. I'm a little technologically challenged lol.
Thanks in advance.
Best Wishes.

Added (1). How to record it and add to itunes?

Added (2). How to record it and add to itunes?

I suggest maybe you record it & add it to iTunes in its own playlist & when you bring it up on iTunes just click on the "repeat" icon