Does not support backup
I liked most features of this app, however it does not support backup. I recently upgrade my iPhone, and when I restored my new iPhone from the computer backup, this App had not restored my scanned docs. I email customer support and they responded saying that this app simply did not support any backup (not from iCloud nor computer backup) so all of my important docs have banished. Be aware of that if you plan to upgrade phone!
(I had the paid version of $0.99)
I am currently using tiny scanner because this one supports backups.
Zombiekill3r3 about
iScanner - PDF Scanner App, v2.1