Based on the users' reviews of the Google Authenticator app, here are three cons and pros in English, each limited to 15 words: **Pros:** * Simple and easy to use, generating strong two-factor authentication codes swiftly. * Conveniently scans QR codes for easy setup and manages multiple accounts efficiently. * Free and widely supported by most service providers, ensuring seamless authentication. **Cons:** * Can be challenging to restore accounts when device is lost or memory is full. * Limited compatibility with older devices, potentially excluding some users from use. * No notification system, requiring users to regularly check and update codes manually.