Halo Authenticator

Halo Authenticator is a simple TOTP authenticator for generating secure two-step verification codes on your device.

Add accounts by scanning a QR code, importing a QR image from your gallery, or pasting an otpauth link or Base32 secret. Your TOTP seeds are encrypted locally with Android Keystore and used on-device to generate verification codes.

Key features:
- Generate time-based one-time passwords for supported services
- Scan authenticator QR codes with the camera
- Import QR codes from saved images
- Paste otpauth links or Base32 secrets manually
- Search, sort, edit, and delete local authenticator entries
- Optional hidden codes, screenshot blocking, and next-code preview
- Multiple display languages

Privacy notes:
- TOTP seeds and one-time codes are stored locally on your device
- The app does not require a user account for TOTP data
- The app includes Google Mobile Ads SDK for advertising features
- Advertising-related data may be processed by Google Mobile Ads SDK for ads, analytics, and fraud prevention