Invantive Authenticator is described as 'Two-step verification solution for use with TOTP-protected websites and products such as Exact Online. Made in Holland by a partner of Exact, awarded accountancy app partner of the year 2017' and is a Authenticator in the security & privacy category. There are more than 10 alternatives to Invantive Authenticator for a variety of platforms, including iPhone, Android, iPad, Android Tablet and Mac apps. The best Invantive Authenticator alternative is Bitwarden Authenticator, which is both free and Open Source. Other great apps like Invantive Authenticator are 2FA Authenticator (2FAS), Authy, Google Authenticator and FreeOTP.