1. Home
  2. Topics
  3. Protonmail Authenticator

Best Protonmail Authenticator Apps

250+ iOS apps curated and reviewed

4.3 avg rating
20 free apps
Updated October 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 October 2026.

Compare top Protonmail Authenticator Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Proton AuthenticatorProton AuthenticatorFree4.4★ (242)NoNoOct 2026
22FA Authenticator (2FAS)2FA Authenticator (2FAS)Free4.7★ (35K)NoNoOct 2026
3Google AuthenticatorGoogle AuthenticatorFree4.9★ (1.2M)NoNoOct 2026
4Duo MobileDuo MobileFree4.9★ (2.3M)NoNoOct 2026
5ID.me AuthenticatorID.me AuthenticatorFree4.3★ (100K)NoNoOct 2026
6Microsoft AuthenticatorMicrosoft AuthenticatorFree4.7★ (703K)NoNoOct 2026
7Salesforce AuthenticatorSalesforce AuthenticatorFree4.6★ (4.3K)NoNoOct 2026
8RSA Authenticator (SecurID)RSA Authenticator (SecurID)Free2.7★ (331)NoNoOct 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
2FA Authenticator (2FAS)#2

2FA Authenticator (2FAS) by Two Factor Authentication Service Inc.

#1 Rated 2FA Authenticator
Strong Contender
📊 Productivity
4.7😊(35K ratings)
Free
2FA Authenticator (2FAS) screenshot 1
2FA Authenticator (2FAS) screenshot 2
2FA Authenticator (2FAS) screenshot 3
2FA Authenticator (2FAS) screenshot 4
2FA Authenticator (2FAS) screenshot 5
2FA Authenticator (2FAS) screenshot 6

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.

What We Love

  • 🚀 Efficient and fast
  • 🔒 Secure and private
  • 👍 Simple and intuitive UI
  • 💡 Customizable icons and folders
  • 🔒 iCloud backup and sync

Room to Improve

  • 🐛 Occasional bugs and crashes
  • 🔒 Lack of password/PIN protection
  • 🕰 No Apple Watch app
  • 🐛 Issues with push notifications
  • 🕰 Missing desktop/web app
Google Authenticator#3

Google Authenticator by Google

Worth Considering
🔧 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
  • 👍 Easy to use

Room to Improve

  • 🐛 Randomly deleted all codes
  • 🐛 Unreliable, lost access to accounts
  • 🐛 Timing issues, codes didn't work
  • 🐛 Accounts duplicated then deleted
  • 🐛 Wiped all accounts after update

More Protonmail Authenticator apps to explore

FAQ about Protonmail Authenticator

What are the best protonmail authenticator apps for iPhone?
Proton Authenticator tops our protonmail authenticator apps ranking as of October 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 2FA Authenticator (2FAS).
Proton Authenticator has no ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 250+ protonmail authenticator apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.