In short, this app has issues syncing with DropBox if you are also using the desktop version of Final Draft. Support replied in a timely fashion, but ultimately feels that the syncing issues are on DropBoxs end. On numerous occasions I overwrote my updated documents with old versions because the app syncs improperly.
I have read all of the Final Draft Writer tutorials, and have replicated my problems on my iPhone and two iPads running the latest iOS versions. If you open the app to do some writing, then close the app completely, and then write more on your desktop, when you reopen the app, the latest changes are not reflected. Since many other mobile apps reflect syncing through DropBox, I am left to suspect that this app needs help in this capacity.
For a $15 app, it should work flawlessly and like a dream, but it does not. The DropBox syncing between my desktop and my phone was a selling point for me. In principle, it should be simple and similar to other apps, but Im left with docs that dont sync properly, and a slew of backup files with the exact same filename as my script in my DropBox folder. Scripts Ive edited on my desktop have been overwritten by the phone version because they didnt sync when I opened them, and then closed the app, which overwrote them with an older version.
This app is not ready for primetime and not worth the price I paid for it.
Merlingoth about Final Draft Mobile