If I were to use Dropbox with the Tiger Mac running 2.12.1, would the iPhone see the file and sync or does that only work with the new and shiny 3.3 version? It's OK if it's not supported officially, I'm just wondering what would happen (nothing, big disaster, or possibly working). Thanks.
It should work fine. You will still need 3.3 to create the "data pointer" file so that the iPhone application can find the data file on Dropbox. You can do this manually though.
Oh, so now I'm tempted to try this. Since I cannot run 3.3 on Tiger, where do I get a data pointer file? I'll use a hex editor and make the file myself if I have to.
One more thing...
I forgot that we made some minor changes to the data format. While the Tiger version should read them fine, you may see conflicts generated during sync.
Because of that, unfortunately, I cannot recommend syncing Tiger version with iPhone.