Scanner Pro allows your iPhone or iPad to scan receipts, whiteboards or any single or multi-page document. Why not just use your device's built-in camera? Scanner Pro has got you covered. It'll auto-crop your documents, remove shadows, correct awkward perspectives and save in multiple formats. Images can be sent right to Evernote, Dropbox and Google Drive.
If you have this great app then go right away and update it. If you don't, then go grab it from the App Store now. Scanner Pro has been a long-time friend of my mobile office workflow.