I’ve submitted an update to Lexikon. While the current version was working fine with all of the iOS 4 betas, there was a bug in my code that was exposed via crashing in the GM build. Hopefully the update will speed through the approval process and hit before or soon after iOS 4 is released later today.
Beyond iOS 4 support the biggest new feature is easier searching, the search bar is always on the screen instead of scrolling off. In addition Lexikon will now better inform you when Lexin is unavailable, some stray memory leaks have been fixed, removal of Pinch analytics, a better default screen to explain how to use Lexikon among other misc. fixes.
As to an offline app I don’t know that I will do one. I find the Folkets Lexikon data lacking, you basically get one word translation and little context, you also don’t get helpful things like the different forms of words, important for those learning the language. I also looked at Wiktionary which has some nice information, some words even have pronunciations for some words. However the overall number of words is lacking.
This site has sadly been a bit neglected as in addition to working on Lexikon, other projects and client work I’m also redoing this site to improve marketing and communication.