This app works pretty well to take a picture of something and turned it into a PDF. It is missing some features that would be helpful, but overall it is OK.
However, if you want to send a fax, it is not effective. It may or may not go. You have to pay extra for each fax, which would be OK if it worked.
I have experienced failure of the fax function, as has the only other person I know who uses this app. The app says the fax was delivered but it was not. So, you get charged and you can not have it re-sent. If you contact technical support to request it be re-sent, all you get in return is inane questions.
iPad Paul about Doc Scan Pro - PDF Scanner