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Aegis Authenticator vs Zero-TOTP: catalog facts
Aegis Authenticator	Zero-TOTP
Free Free and open source under the GPL, with no accounts and no paid tier.	Free Free and open source under the GPL-3.0.
Android	Web, Self-hosted
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	Zero-knowledge encryption of stored TOTP secrets Use the hosted service or self-host it
Android only No cloud sync; you own the backup process	iOS app still in development and CLI only planned Small project with a limited contributor base
Downloadable app	Web application, Self-hosted
Open source	Open source
License: GPL-3.0	License: GPL-3.0
No account needed	Account 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 October 2, 2026

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