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OpenKeychain vs KGpg: catalog facts
OpenKeychain	KGpg
Free Free and open source, supported by donations.	Free Free and open source under the GPL.
Android	Linux
Compatible with OpenPGP software on other platforms Provides encryption to other Android apps such as K-9 Mail	Simple interface over GnuPG Shows signatures, trust and expiry at a glance
Android only Using OpenPGP keys well requires some understanding of how key exchange works	Linux only Fewer features than Kleopatra, with no S/MIME support
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-2.0-or-later
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 24, 2026

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