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Best Protonmail Authenticator Apps

250+ iOS apps curated and reviewed

4.3 avg rating
20 free apps
Updated August 2026

The best protonmail authenticator apps on iPhone average 4.3★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.

Compare top Protonmail Authenticator Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Proton AuthenticatorProton AuthenticatorFree4.4★ (242)NoNoAug 2026
2Google AuthenticatorGoogle AuthenticatorFree4.9★ (1.2M)NoNoAug 2026
3Proton Pass - Password ManagerProton Pass - Password ManagerFree4.8★ (7.5K)NoYesAug 2026
42FA Authenticator (2FAS)2FA Authenticator (2FAS)Free4.7★ (35K)NoNoAug 2026
5Microsoft AuthenticatorMicrosoft AuthenticatorFree4.7★ (687K)NoNoAug 2026
6ID.me AuthenticatorID.me AuthenticatorFree4.3★ (100K)NoNoAug 2026
7Duo MobileDuo MobileFree4.9★ (2.2M)NoNoAug 2026
8Authenticator App: OTP 2FAAuthenticator App: OTP 2FAFree—NoYesAug 2026

Top Picks for Protonmail Authenticator

Proton Authenticator#1

Proton Authenticator by Proton AG

Secure 2FA Authenticator
Editor's Choice
📊 Productivity
4.4😊(242 ratings)
Free
Proton Authenticator screenshot 1
Proton Authenticator screenshot 2
Proton Authenticator screenshot 3
Proton Authenticator screenshot 4

Securely manage your two-factor authentication codes with an open-source, end-to-end encrypted authenticator app. It offers seamless cross-device syncing, effortless import from other apps, and robust backup options, all protected by strict Swiss privacy laws. Take control of your digital security with a trusted and private solution.

What We Love

  • 🚀 Cross-platform support
  • 🔒 Secure cloud sync
  • 👍 Easy import from other authenticators
  • 🚀 Convenient 'next' feature for codes

Room to Improve

  • 🐛 Buggy UI (scrolling jitters, random sorting)
  • 👎 Lack of customization options (pin favorites, change icons)
  • 🐛 Sync/login issues on iPad
Google Authenticator#2

Google Authenticator by Google

Strong Contender
🔧 Utilities
4.9😞(1.2M ratings)
Free
#4in Utilities
Google Authenticator screenshot 1
Google Authenticator screenshot 2
Google Authenticator screenshot 3
Google Authenticator screenshot 4
Google Authenticator screenshot 5
Google Authenticator screenshot 6

Enhance your online security with a second verification step for your accounts. Generate codes directly on your phone, even offline, to protect against unauthorized access. Sync codes across devices for easy access and manage multiple accounts securely.

What We Love

  • 👍 User-friendly
  • 🔒 Secure authentication
  • 🚀 Simple and fast
  • 🔒 Reliable security

Room to Improve

  • 🐛 Randomly deleted all codes
  • 🐛 Unreliable, lost access to accounts
  • 🐛 Timing issues, codes didn't work
Proton Pass - Password Manager#3

Proton Pass - Password Manager by Proton AG

Secure end-to-end encryption
Worth Considering
📊 Productivity
4.8😐(7.5K ratings)
FreeIn-App Purchases
Proton Pass - Password Manager screenshot 1
Proton Pass - Password Manager screenshot 2
Proton Pass - Password Manager screenshot 3
Proton Pass - Password Manager screenshot 4
Proton Pass - Password Manager screenshot 5
Proton Pass - Password Manager screenshot 6

Securely manage your online credentials with end-to-end encryption. This free password manager offers autofill, 2FA code generation, email alias creation, and data breach monitoring across all your devices. Protect your digital identity with robust Swiss privacy laws.

What We Love

  • 🚀 Decent password manager
  • 🔒 Secure and encrypted
  • 👍 Integrated email alias feature
  • 👍 Competitive pricing

Room to Improve

  • 🐛 Autofill issues
  • 🐛 Logging out issues
  • 🐛 Buggy and unreliable

More Protonmail Authenticator apps to explore

4
2FA Authenticator (2FAS)
2FA Authenticator (2FAS)
2FA Authenticator (2FAS)
#1 Rated 2FA Authenticator
Free

Securely log in to your online accounts with two-factor authentication. This app protects your personal data and passwords from cyber threats with a simple, private, and open-source solution. It offers easy token restoration, app protection, and offline functionality.

Two-factor authenticationToken backup and restoreApp protection with passcode/biometrics
📊 Productivity
(35K)
free
5
Microsoft Authenticator
Microsoft Authenticator
Microsoft Authenticator
Protects your online identity
Free

Securely sign into online accounts with multi-factor authentication, passwordless login, or password autofill. Manage multiple accounts, including non-Microsoft services, and access Microsoft products and services seamlessly.

Multi-factor authentication (MFA)Passwordless sign-inPassword autofill
📊 Productivity
(687K)
free
6
ID.me Authenticator
ID.me Authenticator
ID.me Authenticator
by ID.me
Free

This app provides a free multi-factor authentication solution for your account, adding an extra security layer to prevent unauthorized access. It generates secure verification tokens, including time-based codes and push notifications, to confirm your identity during login.

Multi-factor authentication (MFA)Time-based one-time passwords (TOTP)Push notification verification
📊 Productivity
(100K)
free
7
Duo Mobile
Duo Mobile
Duo Mobile
Security made simple
Free

Enhance login security with two-factor authentication. Generate passcodes or use one-tap push notifications for seamless access to your accounts. Manage authentication for multiple applications and web services.

Two-factor authenticationPasscode generationPush notification authentication
💼 Business
(2.2M)
free
8
Authenticator App: OTP 2FA
Authenticator App: OTP 2FA
Authenticator App: OTP 2FA
OTP Authenticator, MFA & 2FA
Free
🔧 Utilities
(0)
9
NCP Authenticator
NCP Authenticator
NCP Authenticator
Provides 2-step authentication
Free
🔧 Utilities
(0)
10
RSA Authenticator (SecurID)
RSA Authenticator (SecurID)
RSA Authenticator (SecurID)
by RSA Security
Free

This app provides multi-factor authentication for enterprises, offering passwordless security through device-bound passkeys. It supports various authentication methods like OTP, biometrics, and push notifications to secure digital access.

Multi-Factor Authentication (MFA)Passwordless Security with PasskeysOne-Time Passcodes (OTP)
💼 Business
(327)
free
11
Salesforce Authenticator
Salesforce Authenticator
Salesforce Authenticator
by salesforce.com
Free

Enhance your online security with multi-factor authentication. This app sends push notifications to your device for identity verification, allowing you to approve or deny login attempts with a simple tap. It also offers one-time verification codes for offline use and can automate approvals for trusted locations.

Multi-factor authenticationPush notification approvalsOne-time verification codes
💼 Business
(4.3K)
free
12
SecTrail Authenticator
SecTrail Authenticator
SecTrail Authenticator
by BNTPRO Bilgi ve Iletisim Hizmetleri Ltd.Sti.
Free
💼 Business
(0)
13
Inalogy Authenticator
Inalogy Authenticator
Inalogy Authenticator
Keycloak Push Authenticator
Free
🔧 Utilities
(0)
14
Authenticator App - 2FA AI
Authenticator App - 2FA AI
Authenticator App - 2FA AI
Two factor Authentication-OTP
Free
🔧 Utilities
(0)
15
2FA Authenticator App - TOTP
2FA Authenticator App - TOTP
2FA Authenticator App - TOTP
Two Factor Authentication App
Free

Enhance your account security with this free, private app for two-factor authentication. Generate verification codes offline to protect against unauthorized access, with support for multiple accounts and device synchronization.

Two-factor authenticationOffline code generationTouch ID/Face ID unlock
📊 Productivity
(1)
free with in-app purchases
16
Rainbow Authenticator
Rainbow Authenticator
Rainbow Authenticator
by 彦欣 吴
Free
📊 Productivity
(0)
17
2FA Authenticator: OTP Auth
2FA Authenticator: OTP Auth
2FA Authenticator: OTP Auth
Two-Factor 2FA, MFA & OTP
Free
🔧 Utilities
(0)
18
Authenticator App - 2FA / OTP
Authenticator App - 2FA / OTP
Authenticator App - 2FA / OTP
Two-Factor Login & Secure MFA
Free

This app provides secure two-factor authentication (2FA) and multi-factor authentication (MFA) by generating time-based one-time passwords (TOTP) for online accounts. It offers encrypted backups, cloud sync, and QR code support for easy account management across multiple devices.

Secure 2FA/MFA code generationEncrypted backup and cloud syncQR code account addition
📊 Productivity
(12)
free with in-app purchases
19
Secure Authenticator: 2FA
Secure Authenticator: 2FA
Secure Authenticator: 2FA
Two-factor authentication: OTP
Free
🔧 Utilities
(0)
20
G Authenticator App: 2FA & MFA
G Authenticator App: 2FA & MFA
G Authenticator App: 2FA & MFA
OTP Codes & QR Scanner
Free
🔧 Utilities
(0)

FAQ about Protonmail Authenticator

What are the best protonmail authenticator apps for iPhone?
Proton Authenticator tops our protonmail authenticator apps ranking as of August 2026, with a 4.4-star average from 242 App Store ratings, and it's free to download.
Yes — 20 of the top protonmail authenticator apps we rank are free to download, including Proton Authenticator and Google Authenticator.
Proton Authenticator has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 250+ protonmail authenticator apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Proton Authenticator is an app designed to securely store and generate your two-factor authentication (2FA) codes. It helps protect your online accounts by requiring a second verification step beyond just your password, ensuring enhanced security.
Key features include end-to-end encrypted iCloud sync for seamless cross-device access, effortless import from other authenticator apps like Google Authenticator, secure backup and export options, and a strong commitment to Swiss privacy laws. It is also open source and ad-free.