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PDF Unlocker vs unlockR: catalog facts
PDF Unlocker	unlockR
Free Free and open source under the Apache 2.0 licence.	Free Free and open source under the GPL-3.0-or-later licence.
Android	Linux
Processing stays on the device No account required	Does one job with a minimal interface Runs locally, files are not uploaded
Requires the correct password; it does not crack PDFs Android only	Only decrypts; no other PDF editing Linux is the main supported platform
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-3.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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