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PDF Annotator vs Adobe Acrobat Reader: catalog facts
PDF Annotator	Adobe Acrobat Reader
Paid Paid software with a free trial.	Freemium Free to use; editing and conversion require a paid Adobe Acrobat subscription.
Windows	Windows, macOS, Android, iOS
Handwritten annotations with pen and touch on tablet PCs Annotations saved into the original PDF and viewable anywhere	Faithful rendering of complex PDFs and forms Form filling, signing and annotation included free
Windows only Paid after the trial	Frequent prompts to upgrade to paid Acrobat Large install compared with lightweight readers
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License: Proprietary
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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