Great for both WiFi scanners and iPhone scans
This app works great with my Canon multifunction printer/scanner: supports document feeder (even double-sided) and multiple resolutions. Scans using the iPhone camera are clear too, and its better than most scanning apps at finding the corners of a skewed document. It can upload scans to a wide range of services - great for scanning to Dropbox.
Ive tried a bunch of scanner apps, but this is my current favorite.
Santacruzin about
VueScan Mobile