# AtOnline Auth — Secure 2FA Authenticator

> Secure 2FA Authenticator (iPhone/iPad app by Karpelès Lab Inc..)

- Source: https://appshunter.io/ios/app/atonline-auth/id6747974636 (this page in markdown: same URL + `.md`)
- Developer: [Karpelès Lab Inc.](https://appshunter.io/developer/1496744532)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 19 MB
- Languages: American English
- Released: 2026-01-05
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/atonline-auth/id6747974636/reviews.md

## What is AtOnline Auth?

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.


## Version history (last 1 release)

### 0.1.0 — 2026-01-06

No release notes.

## More apps by Karpelès Lab Inc.

- [AtOnline Services](https://appshunter.io/ios/app/atonline-services/id1594307503)
- [EllipX - Crypto Wallet](https://appshunter.io/ios/app/ellipx-crypto-wallet/id6505053361)
- [FF.ST](https://appshunter.io/ios/app/ffst/id6743605673)
- [Cassette - Unlimited Music](https://appshunter.io/ios/app/cassette-unlimited-music/id6757436342)
- [QR-Code Master](https://appshunter.io/ios/app/qr-code-master/id6759408409)

All apps by Karpelès Lab Inc.: https://appshunter.io/developer/1496744532

## Related topics

[atonline auth](https://appshunter.io/ios/topics/atonline-auth) · [aton line](https://appshunter.io/ios/topics/aton-line)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-17.*