Genius Scan is a scanner in your pocket. Quickly scan your documents on the go and export them as JPEG or multi-page PDF files.
In addition, you can unlock the Genius Scan+ (in-app purchase of €6.99) features which allow you to export your scans wherever you want: Box, Dropbox, Evernote or any other cloud service app installed on your Android phone that supports JPEG or PDF files.
I have been using this for a while for receipts and it does exactly as it says on the time. Really easy to use and syncs perfectly with my Dropbox account.