Comparison

OTP vs AtOnline Auth

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

OTP

This app generates secure one-time passwords for two-factor authentication on your device. It supports various protocols, allows easy account setup via QR codes or manual entry, and offers robust security features like biometric locks and encrypted backups.

Highlights
  • TOTP & HOTP code generation
  • QR code scanning for setup
  • Biometric app lock (Face ID/Touch ID)
  • Encrypted data export/import
  • Account grouping and organization
  • Dark Mode support
  • iCloud sync and backup
Features
Read full description

OTP-Auth is a beautifully designed two-factor authentication (2FA) app that generates one-time passwords on your iPhone. Supporting both TOTP and HOTP protocols, it adds an essential layer of security to all your online accounts. KEY FEATURES: - Generate TOTP & HOTP verification codes offline - Scan QR codes or add accounts manually - Tap to reveal code and copy to clipboard - Face ID & Touch ID biometric app lock - Dark Mode with system, light, and dark themes - iCloud sync and backup across devices - Export & import data with AES-256-GCM encryption - Import from Google Authenticator, 2FAS, and Aegis - 60+ branded service icons with auto-matching - Account grouping with drag-and-drop reorder - Search and sort by name, type, or custom order - Modern card-style UI with smooth animations SECURITY FIRST: Your authentication secrets never leave your device or your iCloud. Encrypted exports use AES-256-GCM. Biometric authentication keeps your codes private even if someone has your phone. IMPORT & EXPORT: Easily migrate from other authenticator apps. OTP-Auth supports encrypted JSON, plain text URI, 2FAS backup, Aegis vault, and Google Authenticator QR migration. Export your data securely with password-protected encryption. ORGANIZE YOUR WAY: Group accounts into custom folders, drag and drop to reorder, and use the built-in search to find any account instantly. Hide codes by default and reveal with a tap. PERMISSIONS: Camera access is required for scanning QR codes to add accounts. Learn more about OTP verification: https://www.wikiwand.com/en/One-time_password

About

AtOnline Auth

Features
Read full description

AtOnline Auth is a secure two-factor authentication (2FA) app that helps protect your online accounts with time-based one-time passwords (TOTP), HMAC-based one-time passwords (HOTP), and OCRA challenge-response authentication. KEY FEATURES: Secure Token Management - Store and manage all your 2FA tokens in one place - Add tokens easily by scanning QR codes or entering details manually - Support for TOTP, HOTP, and OCRA (RFC 6287) authentication methods - Configurable token settings (6 or 8 digits, various time periods) OCRA Challenge-Response - Full RFC 6287 OCRA support for enterprise authentication - Scan challenge QR codes to auto-fill and generate responses - Support for PIN, session data, counter, and timestamp options - Compatible with banking and high-security applications Strong Security - Master password protection with industry-standard encryption - Biometric authentication (Face ID and Touch ID) for quick access - All sensitive data encrypted locally on your device - No cloud storage - your secrets never leave your device Smart Organization with Tags - Create custom tags to organize tokens by category (work, personal, banking, crypto) - Filter and find tokens instantly using tags - Manage dozens of accounts without losing track - Quick search across all your tokens Backup & Recovery - Secure encrypted backup export - Password-protected import/restore functionality - Never lose access to your accounts SUPPORTED ALGORITHMS: - SHA1, SHA256, and SHA512 hash algorithms - Compatible with all standard TOTP/HOTP/OCRA authenticator systems AtOnline Auth works offline and keeps your authentication codes secure and accessible whenever you need them.

Screenshots

OTP4 screens
AtOnline Auth3 screens

Verdict

The call

The clearest difference is in-app purchases: AtOnline Auth at none against OTP's 1. OTP's advantage is iOS requirement (9.3 vs 13.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. OTP sells 1 one-off in-app purchase. AtOnline Auth asks for nothing beyond the download.

Scorecard2 real differences · 8 level
OTP versus AtOnline Auth: the parameters behind the verdict, then further details
ParameterOTPAtOnline Auth
PriceFreeFree
Rating3.6 (18 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings18 — better—
Update frequencyEvery 6 months—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS9.3 — better13.0
Further details — not scored
Size27 MB19 MB
Age rating4+4+
Developer浩 王Karpelès Lab Inc.

In-app purchases

1 purchases

OTP

One-time1
  • OTPAuth Premium$1.99
None

AtOnline Auth

No in-app purchases

Questions

Is OTP free?
OTP is free to download, with in-app purchases available.
Is AtOnline Auth free?
AtOnline Auth is free to download, with no in-app purchases.
Do OTP or AtOnline Auth have ads?
Neither OTP nor AtOnline Auth shows ads.

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