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Sequoia PGP vs OpenKeychain: catalog facts
Sequoia PGP	OpenKeychain
Free Free and open source.	Free Free and open source, supported by donations.
Linux, Command line	Android
Written in memory-safe Rust Usable both as a library and through the sq command-line tool	Compatible with OpenPGP software on other platforms Provides encryption to other Android apps such as K-9 Mail
Command-line only, with no graphical interface Much of the project is aimed at developers rather than end users	Android only Using OpenPGP keys well requires some understanding of how key exchange works
Downloadable app	Downloadable app
Open source	Open source
License: LGPL-2.0-or-later	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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