I've started testing the new Evernote Scannable app for saving documents (see the review from TheNextWeb here). It looks like it will be a very handy tool for scanning and saving documents in my burgeoning family history files. I downloaded the version for iOS and conducted a test by scanning three pages from my Grandfather's Pilot's Log. The images below were saved in the Scannable app and pushed to email as a pdf.
Original Pilot's Log of Leo M. Reid.
I was able to rotate and crop images within the app. I plan to test this with some other files but so far Evernote Scannable looks to be very useful.