PocketBib is a BibTeX library reader for iPads and iPhones that's compatible with JabRef. With PocketBib you can search, browse and read the linked papers in your library, and synchronise them over Dropbox.
PocketBib is available on the App Store for $4.99 (http://itunes.apple.com/app/pocketbib-for-bibtex-bibdesk/id524521749). Take a look and feel free to email me if you have any questions or comments. See my website for more details: http://www.grahamdennis.me/pocketbib/