Proton Authenticator

proton.me/authenticator
Proton Authenticator

Proton Authenticator is free, open source, and available for both iOS and Android. A Proton account is required to use Proton Authenticator. Existing 2FA codes can be imported from other popular apps such as Google Authenticator and LastPass.

Open Source

Proton Authenticator Privacy Policy

Privacy Policy Summary

  • The service provides two factor authentification for your account
  • Users agree to comply with the law of the service's country
  • The court of law governing the terms is in a jurisdiction that is friendlier to user privacy protection.
  • This service provides an onion site accessible over Tor
  • Terms may be changed any time at their discretion, without notice to you
  • This service tracks which web page referred you to it
  • Any liability on behalf of the service is only limited to the fees you paid as a user
  • Instead of asking directly, this Service will assume your consent to changes of terms merely from your usage.
  • This service is only available to users over a certain age
  • Pseudonyms are allowed
  • You can opt out of promotional communications
  • Your IP address is collected, which can be used to view your approximate location
  • Your account can be suspended for several reasons
  • Third parties are involved in operating the service
  • The service is not responsible for linked or (clearly) quoted content from third-party content providers
  • This service assumes no responsibility and liability for the contents of links to other websites
  • You are prohibited from sending chain letters, junk mail, spam or any unsolicited messages
  • You can access most of the pages on the service's website without revealing any personal information
  • The service informs you that its privacy policy does not apply to third party websites
  • The service has a no refund policy
  • You agree not to use the service for illegal purposes
  • You agree not to submit libelous, harassing or threatening content
  • You are prohibited from attempting to gain unauthorized access to other computer systems
  • The service provider makes no warranty regarding uninterrupted, timely, secure or error-free service
  • The service does not guarantee accuracy or reliability of the information provided
  • Invalidity of any portion of the Terms of Service does not entail invalidity of its remainder
  • Failure to enforce any provision of the Terms of Service does not constitute a waiver of such provision
  • Information is provided about security practices
  • Your personal data may be disclosed to comply with government requests without notice to you
  • Information is provided about how your personal data is used
  • The service claims to be GDPR compliant for European users
  • The court of law governing the terms is in Switzerland
  • You are forced into binding arbitration in case of disputes

Score

C

Documents

Domains Covered by Policy

  • protonmail.com
  • protonmail.ch
  • getproton.me
  • pm.me
  • protonmailrmez3lotccipshtkleegetolb73fuirgj7r4o4vfu7ozyd.onion
  • proton.me
  • protonapps.com

About the Data

This data is kindly provided by tosdr.org. Read full report at: #491

Proton Authenticator Source Code

Author

protonpass

Description

Homepage

License

GPL-3.0

Created

23 Jul 25

Last Updated

06 Jun 26

Latest version

1.3.7

Primary Language

Kotlin

Size

39,316 KB

Stars

296

Forks

26

Watchers

296

Language Usage

Language Usage

Star History

Star History

Recent Commits

  • Antoine Marchaud (27 Mar 26)

    chore: update changelog

  • Antoine Marchaud (27 Mar 26)

    bump: version 1.3.6 → 1.3.7

  • Victor (26 Mar 26)

    fix: snackbar message shown multiples times

  • Victor (25 Mar 26)

    fix: improve QR scanning

  • Antoine Marchaud (25 Mar 26)

    fix: item creation

  • Antoine Marchaud (24 Mar 26)

    chore: add unit test for HomeMasterViewModel

  • Antoine Marchaud (24 Mar 26)

    fix: Item creation race condition between entries and codes flows Restructure entryModelsMapFlow to use flatMapLatest + inner combine, ensuring entries and codes are always from the same batch.

  • Victor (24 Mar 26)

    fix: qr not working

  • Victor (23 Mar 26)

    chore: forbid coauthors

  • L10n bot (20 Mar 26)

    i18n(weekly-mr): Upgrade translations from crowdin (faa466ab).

  • Victor (24 Feb 26)

    fix: undecryptable items

  • antoinemarchaud (19 Feb 26)

    feat: refacto of draggableItems

  • L10n bot (20 Feb 26)

    i18n(weekly-mr): Upgrade translations from crowdin (3d5a9305).

  • Victor (17 Feb 26)

    chore: update common

  • Victor (17 Feb 26)

    chore: update to new package refs

  • Victor (13 Feb 26)

    refactor: change method visibility

  • Victor (13 Feb 26)

    refactor: remove count

  • Victor (13 Feb 26)

    refactor: incorrect when

  • Victor (13 Feb 26)

    refactor: rethrow cancellation

  • Victor (11 Feb 26)

    fix: password reset scenario

  • Victor (11 Feb 26)

    refactor: agents

  • Victor Hidalgo (27 Jan 26)

    refactor: add logs on file reader

  • Victor Hidalgo (22 Jan 26)

    fix: unlock scren theme

  • Victor Hidalgo (22 Jan 26)

    chore: add claude to gitignore

  • Victor Hidalgo (22 Jan 26)

    fix: camera not found crash

  • Victor Hidalgo (19 Jan 26)

    chore: update changelog

  • Victor Hidalgo (19 Jan 26)

    bump: version 1.3.5 → 1.3.6

  • L10n bot (16 Jan 26)

    i18n: Upgrade translations from crowdin (1e0635a4).

  • L10n bot (02 Jan 26)

    i18n: Upgrade translations from crowdin (b221c179).

  • antoinemarchaud (22 Dec 25)

    fix: Codes flash before Biometric unlock is offered

Proton Authenticator Website

Website

Proton: Privacy by default

Over 100 million people use Proton to stay private and secure online. Get a free Proton account and take back your privacy.

Redirects

Does not redirect

Security Checks

All 66 security checks passed

Server Details

  • IP Address 185.70.42.45
  • Hostname 185-70-42-45.protonmail.ch
  • Location Lausanne, Vaud, Switzerland, EU
  • ISP Proton AG
  • ASN AS62371

Associated Countries

  • US US
  • CH CH
  • DE DE

Safety Score

Website marked as safe

100%

Blacklist Check

proton.me was found on 0 blacklists

  • ThreatLog
  • OpenPhish
  • PhishTank
  • Phishing.Database
  • PhishStats
  • URLhaus
  • RPiList Not Serious
  • AntiSocial Blacklist
  • PhishFeed
  • NABP Not Recommended Sites
  • Spam404
  • CRDF
  • Artists Against 419
  • CERT Polska
  • PetScams
  • Suspicious Hosting IP
  • Phishunt
  • CoinBlockerLists
  • MetaMask EthPhishing
  • EtherScamDB
  • EtherAddressLookup
  • ViriBack C2 Tracker
  • Bambenek Consulting
  • Badbitcoin
  • SecureReload Phishing List
  • Fake Website Buster
  • TweetFeed
  • CryptoScamDB
  • StopGunScams
  • ThreatFox
  • PhishFort

Website Preview

Website preview

Proton Authenticator Android App

APK Info

De-Googled Compatibility

Native 4.00 / 4 9 ratings
microG 4.00 / 4 2 ratings
  • GrapheneOS Native 4.0 / 4 (8)

Tested on Android 10–16 · Updated 06 Feb 26 · View on Plexus →

Trackers

  • Sentry

Permissions

  • Access Network State
  • Camera
  • Foreground Service
  • Internet
  • Post Notifications
  • Receive Boot Completed
  • Use Biometric
  • Use Fingerprint
  • Wake Lock
  • Dynamic Receiver Not Exported Permission

Proton Authenticator iOS App

App Info

Proton Authenticator

Get the authenticator trusted by millions — from Proton Mail, the world’s largest encrypted email provider. Proton Authenticator is open source, end-to-end encrypted, and protected by strict Swiss privacy laws. Protect all your new accounts and strengthen security on your existing ones. Proton Authenticator keeps your 2FA codes secure, accessible, and completely private — without compromise. KEY FEATURES Encrypted iCloud Sync: Seamlessly sync your 2FA secrets across devices with end-to-end encryption. Effortless Import: Migrate from Google Authenticator, Authy, or any other app in seconds. Secure Backup & Export: Retain full control of your data with easy backup and restore options. Swiss Privacy by Design: Built under Switzerland’s strongest data protection regulations. Open Source & Transparent: Auditable code. No tracking. No ads. Take control of your digital security with encryption you can trust. Free to use: No Proton account required, ad-free. Offline support: On mobile and desktop apps No other 2FA app provides this combination of security and privacy. Trusted by millions. Built by Proton. Take control of your digital security today. Terms of service: https://proton.me/legal/terms Learn more: https://proton.me

Rating

Rated 4.28 out of 5 stars by 186 users

Version Info

  • Current Version 1.3.2
  • Last Updated 05 Dec 25
  • First Released 31 Jul 25
  • Minimum iOS Version 17.0
  • Device Models Supported 123

App Details

  • IPA Size 116.75 Mb
  • Price Free (USD)
  • Age Advisory 4+
  • Supported Languages 10
  • Developer Proton AG
  • Bundle ID me.proton.authenticator

Screenshots

Proton Authenticator Reviews

More 2-Factor Authentication

About the Data: Proton Authenticator

Change History

API

You can access Proton Authenticator's data programmatically via our API. Simply make a GET request to:

https://api.awesome-privacy.xyz/essentials/2-factor-authentication/proton-authenticator

The REST API is free, no-auth and CORS-enabled. To learn more, view the Swagger Docs or read the API Usage Guide.

Share Proton Authenticator

Help your friends compare 2-Factor Authentication, and pick privacy-respecting software and services.
Share Proton Authenticator and Awesome Privacy with your network!

View 2-Factor Authentication (11)