I have used this app during the last two years in order to scan documents and then send in PDF format. Most of the documents that I haves scanned were for my PhD application and grants and the app works very well: the quality of the image/document is great and have the option of sending in different formats. Also, you can add pages to the same document with just one bottom,so basically is faster than the computer. I used mainly with printed documents, so I do not know how it works when images are scanned.
Amalia Amaliaa about My Scans, best PDF Scanner App