Bitwarden Authenticator is a standalone app that is available for everyone, even non-Bitwarden customers.
In its current release, Bitwarden Authenticator generates time-based one-time passwords (TOTP) for users who want to add an extra layer of 2FA security to their logins.
There is a comprehensive roadmap planned with additional functionality.
Available for iOS and Android
The phone being inside you is probably why it died 😂
But on a serious note, I haven’t switched to passkeys because I don’t have a clear mental model of how to recover from losing both my phone and computer at the same time.