Papers 2 and Papers for the iPad: the ultimate journal reading combination
www.tuaw.com/2011/08/28/papers-2-and-papers-for-the-ipad-the-ultimate-journal-reading-c
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
I know at least a couple people that would probably like this app a lot (Riedl? Tom?), but I don't think any have iPads.