New version just released: adds power and torque units to the unit convertor
You can change the wikipedia language in Searchify Settings. From the settings screen, press Menu then go Options -> Wikipedia. Or tap-and-hold on the Wikipedia entry in the main settings screen. You’ll see “Wikipedia language” setting and will be able to choose the wikipedia language.
Droid Life have done a video review of Searchify, showing the calculator and calendar functions in action and also how to get the app set up. Check it out!