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OpenKeychain vs Secret Space Encryptor: catalog facts
OpenKeychain	Secret Space Encryptor
Free Free and open source, supported by donations.	Free Free to download.
Android	Windows, macOS, Linux, Android
Compatible with OpenPGP software on other platforms Provides encryption to other Android apps such as K-9 Mail	Password manager and file and text encryption in one Android app Desktop companion for files and text
Android only Using OpenPGP keys well requires some understanding of how key exchange works	Main app is Android only; iOS versions are separate apps Developer site gives little detail
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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