II Factor

II Factor is a simple, elegant, free and open source Two Factor Authentication (2FA) application which generates Time-based One-time Password (TOTP).
2FA apps generates 6 digit one-time tokens on your device which are used in combination with your password.
This helps you protect your account from hackers by adding an additional layer of security.
Just enable the two-factor authentication in your account settings for your provider, scan the QR code or enter the secret key provided and you're good to go!
II Factor features iCould Sync so you can store all your Keys in the cloud and access them across multiple devices (iOS & macOS). In the event that you lose or damage your phone, you can simply install II Factor on your new device to get access to your Keys.
For the privacy conscious you can manually export your keys locally via a plethora of options avoiding the Cloud and keeping off the grid.
II Factor also supports Groups so your personal life stays separate from your work life.
II Factor supports multiple ways to easily setup accounts:
Scan QR Code
Read from QR Code image
Import from file
Manual entry
II Factor can be secured via the device biometric’s:
Face ID
Touch ID
Phone Password
II Factor uses iCloud to Sync:
Across devices
Key Backups
Recover Keys
II Factor also provides several convenient ways to export all your accounts:
Export Key URIs to Clipboard
Export Key URIs as plain text
Export Key URIs as a TXT file
Export Key URIs as QR Code images
II Factor offers quick token access via tabs:
All tokens
Personal tokens
Work tokens
II Factor supports and matches the device's dark and light modes.
II Factor has a very nice "Account detail" page to show every account with its QR Code, you can check or copy these info in any time.
II Factor generates Time-based One-time Passwords (TOTP), stored on the user's phone without internet access.
There is no data tracking or personal information collected.
This solution dramatically increases login security.

II Factor is fully open source on GitHub:
https://github.com/Plus1XP/II-Factor