Great for reading, but still needs improvement
Wikibot, which I use on all of my OSX and iOS devices, is a great Wikipedia reader. The shared history across devices is a big plus. However, WB offers no mechanism to edit WP articles or look at the edit history or “Talk” metadata, which would occasionally be useful.
WB’s big problem, though, is its terrible handling of article images. Clicking an image opens a new window not with the full-size image you would see if you clicked on an image on Wikipedia.org, but with the small thumbnail, floating in the middle of a large gray background. Why WB doesn’t fetch the full size image is beyond me. I’ve emailed the author multiple times with this request/inquiry, but never gotten a response.
ablock about
Wikibot — A Wikipedia Articles Reader