Compare software

Aegis Authenticator vs Yubico Authenticator: catalog facts
Aegis Authenticator	Yubico Authenticator
Free Free and open source under the GPL, with no accounts and no paid tier.	Free The app is free; it requires a YubiKey, which is bought separately.
Android	Windows, macOS, Linux, Android, iOS
The vault is encrypted with AES-256-GCM, unlocked by password with scrypt or by biometrics Automatic backups of the vault to a location you choose, plain or encrypted	Secrets stay on the hardware key rather than the device Same codes available on any machine where the key is plugged in
Android only No cloud sync; you own the backup process	Requires a YubiKey Losing the key loses access to the stored codes unless you have a backup
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	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 24, 2026

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