View Extra Sync Details in Snow Leopard
In Snow Leopard, Option-click the Sync icon in the menu bar to display a menu showing each available sync service and when it was last synced. Other new items in that menu include commands to Reset Sync Services entirely and to open the iSync and Sync Diagnostics utilities.
better-looking. Edit your PDFs anywhere. Sign contracts, make
changes, fill forms, and more. All while you’re on the move.
Syncs via iCloud and Dropbox. <http://smle.us/tbpdfpen-ipad>
Just depends on what sort of data you're storing, and your comfort level with storing that data with a third-party.
And on that topic, my bet is that we'll see an iPad app at some point, but not an iPhone app. But who knows!