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Highland Pro vs WriterDuet: catalog facts
Highland Pro	WriterDuet
Freemium Distributed through the App Store; check the store listing for current pricing.	Freemium A free tier is available, with paid plans for more features.
macOS, iOS	Web
Handles screenplays and prose manuscripts in one app Native apps for Mac, iPad and iPhone	Real-time co-writing on the same script Covers planning, writing and sharing a script
Apple platforms only, no Windows or Android version Sync depends on iCloud	Proprietary software Mainly useful for scripts rather than general writing
Downloadable app	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.