KeyVault is described as 'OTP authenticator app for managing your 2FA / OTP codes on iPhone, iPad, Mac and Apple Watch' and is a Authenticator in the security & privacy category. There are more than 50 alternatives to KeyVault for a variety of platforms, including Android, iPhone, iPad, Android Tablet and Mac apps. The best KeyVault alternative is Aegis Authenticator, which is both free and Open Source. Other great apps like KeyVault are Proton Authenticator, Ente Auth, Bitwarden Authenticator and 2FA Authenticator (2FAS).