Upload Sound Recording to GarageBand (Do Not Own Computer)

Title says it all basically. I just own an iPhone 5 and I recorded something on the basic sound recorder that I'd like to upload to SoundCloud. I know that you can upload songs to SoundCloud with GarageBand so I've been trying to find a way to get this recording onto GarageBand without the aid of a computer. I downloaded an audio conversion app to make it an MP3 instead of a m4a. I downloaded drop box, as well as a few other sound recording programs just to see if I could find one that would help me get this recording to GarageBand or even straight to SoundCloud. Can anyone help me with this?