Password Manager vs Authenticator: KeePassDX and Aegis Explained

The quick answer: it is not really a versus

People often ask whether they should use KeePassDX or Aegis, as if they were two brands of the same thing. They are not. KeePassDX is a password manager — it remembers your passwords. Aegis is an authenticator — it generates the short-lived codes that prove a login is really you. They solve two different halves of the same problem, and the strongest setup uses both together.

What KeePassDX does: the vault

KeePassDX stores all your usernames and passwords in one database file, encrypted with a master password only you know. Instead of reusing a handful of passwords everywhere (the habit behind most account takeovers), you generate a long, unique password for every account and let the vault remember them. The database works entirely offline, unlocks with your fingerprint, and — because it uses the open KeePass format — you can open the same file with compatible apps on your computer and back it up wherever you like.

What Aegis does: the second factor

A password, even a strong unique one, can still leak. Two-factor authentication (2FA) adds a second proof: a six-digit code that changes every 30 seconds. Aegis stores the secrets for those codes in its own encrypted vault and shows you the current code whenever you log in somewhere. The vault is protected by a password or your biometrics, and Aegis can export an encrypted backup — a crucial feature, because losing your 2FA codes can lock you out of your own accounts.

How they work together

A typical login with both apps looks like this: the site asks for a password, KeePassDX fills it; the site then asks for a code, Aegis shows it. Even if one device database were somehow exposed, an attacker would still be missing the other factor. Keeping passwords and codes in two separate apps, with separate vaults, is exactly the point of 'two-factor' — one app holding both would quietly turn it back into one factor.

A practical tip: turn on 2FA first for the accounts that matter most — your email above all, because email resets everything else — then banking, shopping and social accounts as you go.

Which should you install first?

Start with KeePassDX. Unique passwords fix the biggest risk, and setting up the vault gives every new account you create a strong password from day one. Then install Aegis and enable two-factor authentication on your email and other important accounts, storing the codes in Aegis as you enable them. Within an afternoon, both halves of the job are covered — by free, open-source apps with no accounts and no subscriptions.