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Celtx vs Highland Pro: catalog facts
Celtx	Highland Pro
Freemium Free account available, with a 7-day trial of paid features.	Freemium Distributed through the App Store; check the store listing for current pricing.
Web	macOS, iOS
Script editors for many formats, including theater and games Storyboard and beat sheet tools	Handles screenplays and prose manuscripts in one app Native apps for Mac, iPad and iPhone
Many features sit behind paid plans Requires an account	Apple platforms only, no Windows or Android version Sync depends on iCloud
Web application	Downloadable app
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is 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.