For this holiday I decided to take two cameras, my mobile and the iPad. There are certainly some limitations and it is easier to work on a big work station and with the more capable programs but the apps are getting better and better and even just with the iPad you can get reasonable results for the web.
I took the image with my Nikon DSLR and imported it with the camera kit to my iPad. As much as I tried I couldn't get a better in camera crop as you see. There are some parts of nearby trees which I wanted to get rid of first. I used the "Photo Eraser" app to get rid of them.
Afterwards I used the "Photogene" app to enhance the details and get more Saturation in the image. Photogene gives yo a lot of possibilities and is nearly like a little brother of Lightroom. Exporting in different resolutions is a piece of cake.