Thanks for the reply, but it's not annotations (which I have been using since skitch was first available) that I'm after. Apps like CamScanner allow photos of plain text documents (mostly invoices etc for me) to be photographed and edited easily into simple black and white pdfs, optimised for reading. The app automatically recognises the corners of a page due to the contrast with the background, so you end up with a perfect scan of the page. Annotations, while useful, are really geared more for collaborating. When, like myself and millions of others, you use Evernote mostly as a 'digital filing cabinet', these tools are not enough.