Batutta
Major Contributor
WriterDuet has become free (actually donate what you want to pay), and has a new offline, non-cloud based version of their software you can use on your desktop or Android/iOS device called WriterSolo. Played around with it and it seems on par with Final Draft, and even offers some features Final Draft doesn't. Hit the W in the bottom left hand corner to see the download link.
https://freescreenwriting.com/
https://freescreenwriting.com/