No Support and No copying code
To correct the other review, yes you can scroll horizontally - you just use two fingers instead of one. Only viewing the code would be what one would expect of a free app, but this paid app doesn't allow copying any of the code for pasting elsewhere. This was unexpected and a disappointment as this was exactly the feature I was looking for. On balance, nowhere in any of the documentation for any of the "view html source" type apps is the ability to copy some of the code for pasting elsewhere stated as a feature. I'm not going to buy one at a time and find out none of them do this. Clicking on the Source Viewer support link doesn't link to a support page, but a web page with 78 web app icons. When the App Store Apps tab on that page is selected, you just get a web page with 75 apps that link back to iTunes.