Playing with the free read-only version. It’s great! Definitely better than trying to use the boards through the handheld browser.
Once you’re logged in with your C77 username it becomes pretty useful, by default showing you all the unread (by you) messages. Absence of this feature would have been a deal-breaker for me. So I’m definitely going to be shelling out the $3 for the full version.
Too bad the developer of this app doesn’t allow you to create branded locked-down versions so Core77 could simply deliver their own contained app.