The Blackberry app (version 1.6) can be downloaded right now from Tim’s blog post, or later from the Blackberry App World. The iPhone and iPad versions have been submitted to the Apple App Store for approval.
New for this version is that you now can check in using FourSquare and tweet your location using twitter directly from the app.
Update: I am having problems with the app on my Blackberry (Bold 9700 with OS6). It locks while loading the data (never finishes) and clicking on the day/time selectors just bring up the menu. I am sure it is related to the data not being fully loaded, and hopefully Tim will get it fixed soon.