Aegis

Aegis Authenticator is a free, open source Android app for managing two-step verification codes. Two-step verification (also called 2FA) adds a second layer of security to online accounts by requiring a time-limited code in addition to a password when you sign in. Aegis generates those codes and stores them securely on your device.

The codes are kept in an encrypted vault on the phone using AES-256-GCM encryption, which is a widely used security standard. You can unlock the vault with either a password or your device's biometrics such as a fingerprint. The app also prevents screenshots from being taken to reduce the chance of codes being captured by screen recording tools. Individual entries can be hidden and revealed with a tap.

Aegis is compatible with the HOTP and TOTP standards, which are the protocols used by the vast majority of websites and services that offer two-factor authentication. It can also import accounts from many other authenticator apps including Google Authenticator, Microsoft Authenticator, Authy, andOTP, and several others, making it easier to switch without re-enrolling every account.

For organization, entries can be sorted, grouped, given custom names, and assigned icons. Community-maintained icon packs are available to make recognizing accounts at a glance easier. The vault can be exported in either encrypted or plain-text form, and automatic backups can be configured to save to a location of your choice. The app offers light, dark, and AMOLED themes.

Aegis is available on Google Play and F-Droid. The source code is licensed under the GNU General Public License v3.0. Translations, bug reports, and code contributions are welcomed through the contributing guidelines in the repository.