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Drawboard PDF vs Noteshelf: catalog facts
Drawboard PDF	Noteshelf
Freemium Free to download, with paid plans for additional features and teams.	Freemium Free to download, with paid options and enterprise plans.
Windows, macOS, Android, iOS, Web	macOS, iOS
Markup tools designed for pen and touch input Annotations sync live across all devices	Realistic pens and many paper templates for handwriting PDF annotation with highlights and sticky notes
Team review features are aimed at architecture and engineering Advanced features sit behind paid plans	Limited to Apple devices according to the homepage Best used with a stylus
Downloadable app, Web application	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is 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 September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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