Multi Authenticator: OTP, MFA positions itself as a security-focused authentication code manager for iOS devices, offering time-based one-time passwords (TOTP) for two-factor authentication without requiring internet connectivity. The app operates entirely offline, storing encrypted data locally while maintaining compatibility with standard 2FA implementations used by major online services. Its market differentiation lies in emphasizing local device storage rather than cloud synchronization, appealing to users prioritizing maximum control over their authentication data. The core functionality centers around generating and managing TOTP codes using the widely adopted RFC 6238 standard. Users can add new accounts by scanning QR codes or manually entering secret keys, with the app automatically generating six-digit codes that refresh every 30 seconds. Advanced encryption protects all stored data, including optional iCloud backups, ensuring that authentication secrets remain inaccessible even if device backups are compromised. The implementation uses industry-standard cryptographic practices, though the specific encryption algorithms aren't detailed in public documentation. The user interface employs a minimalist design with a straightforward list view displaying account names and their current codes. Large, easily tappable code displays facilitate quick copying during login procedures, while a progress indicator visually represents the remaining time before code regeneration. Real-world usage typically involves launching the app when accessing services requiring 2FA, copying the relevant code, and pasting it into authentication prompts. The absence of biometric authentication for app access represents a notable design choice, relying instead on device-level security measures. With no user reviews available at publication, the app's reception cannot be objectively assessed from community feedback. The 4.38/5 rating suggests generally positive reception, though the specific factors driving this rating remain unclear without detailed user testimonials. Potential users should note the absence of documented independent security audits and the developer's relatively low public profile compared to established authentication app publishers. The app's primary strength lies in its offline operation and robust encryption model, making it suitable for users avoiding cloud-based authentication solutions. Limitations include the lack of cross-platform synchronization and absence of documented third-party security validation. Multi Authenticator serves as a competent solution for iOS-exclusive users seeking local 2FA management, though enterprise users or those requiring multi-device synchronization might prefer alternatives with more extensive feature sets and established track records.