Proton Authenticator

1.3.7

Proton AG

4.83

9,862 reviews

100,000+
Downloads

Free

Secure, end-to-end encrypted, open source, and available on every device

Pros & Cons

Open-source, verifiable codebase for transparency
End-to-end encryption with offline TOTP generation
Cross-device sync with privacy protections
Biometric or PIN protection for quick, secure access

No downloads in the last 30 days (0 in the recent period)
Limited cloud-based backups or account-based sync compared to some competitors
QR code scanning and onboarding have had improvements in recent updates (ongoing refinements)

About Proton Authenticator

Proton Authenticator is a productivity app developed by Proton AG.

Download Statistics

Proton Authenticator has been downloaded 440 thousand times. In the last 30 days, the app was downloaded 27 thousand times.

User Ratings

Proton Authenticator is rated 4.83 out of 5 stars. The rating is based on 9.9 thousand ratings.

App Information

Proton Authenticator is FREE to download. The APK download size is 48.18 MB. The latest version available is 1.3.7. The last update was on March 27, 2026.

Technical Requirements

Proton Authenticator requires Android 8.1+ or higher. The app has a content rating of Everyone. The app has been available on Google Play August 2025.

Description

Protect your accounts with Proton Authenticator, a private and secure cross-device two-factor authentication (2FA) that works offline.

More data about Proton Authenticator

Price	Free to download
Total downloads	440 thousand
Recent downloads	27 thousand
Rating	4.83 based on 9.9 thousand ratings
Ranking	Medium ranked
Version	1.3.7
APK size	48.2 MB
Number of libraries	11
Designed for Android	8.1+
Suitable for	Everyone
Ads	NO ads

App Performance Report

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Alternative downloads for the Proton Authenticator app

Proton Authenticator compared with similar apps

Common keywords of similar apps

Proton End Open Source Encrypted Laws Free Apps Fixes Fix Authenticator Code Secure Device Protect Offline Privacy Totp Account

Keywords missing from this app

App Accounts Codes Authentication Security Otp Factor Time Backup Data Password Access Qr Passwords Verification Generate Google Protection Online Support Step Login Services Based Features Securely Devices Easy Setup Manage Simple Add Https Fast Reliable Restore Work Works Personal Layer Multi

Google Play Rating history and histogram

Rating history

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Downloads over time

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Proton Authenticator has been downloaded 440 thousand times. Over the past 30 days, it averaged 910 downloads per day.

Changelog of Proton Authenticator

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Developer information for Proton AG

Proton AG

support@protonmail.zendesk.com

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Comments on Proton Authenticator for Android

★★★★★ Random Calico · Jun 17, 2026

Able to import from Google authenticator. Proton authenticator works great, everything is synced.

★★★★★ Timothy Slazyk (Tim) · Jun 10, 2026

Superior to all others compromised systems. Just sayin' You'll figure it out the hard way. Hint: #DARPA The smartest thing any American can do is terminate their Facebook/DARPA account, but be sure to DELETE your data. Will the wicked truly delete your data? Probably not. Regardless, there is a process you MUST follow. Do this in preparation for what the Committee of 300 psychopaths has planned, and is implementing, ever so slowly, and systematically, #TotalitarianTipToe YOU HAVE BEEN WARNED!

★★★★☆ Amir M. Sajedian · Jun 27, 2026

I like the simplicity of it. I like that you can force syncing with scroll to refresh. But there are a few things I wish you'd consider. First, it always locks when you quit. Maybe add a lock timer like Proton Pass? And second, it doesn't support any locking methods other than Biometric (like PIN or pattern). And finally, it may be a good idea to hide the Proton account in settings with asterisks (*) and only show a few of the first and last letters.

★★★★★ Sonya Harris · Jul 5, 2026

Exactly what I wanted, a free authenticator app that works! I've never had any problem with any of Protons services, and have been a paid user of one of their other services for many years now. Thank you to the Proton team.

★☆☆☆☆ Leonardo García (Leo) · Jun 3, 2026

The UI looks bad. I wanted to switch from Stratum since I'm an Unlimited subscriber, but I wasn't expecting that. Then on import, there's no feedback to let you know it's importing, so I ended up importing twice before it told me it had imported. Then I decided to log in with my account, and now I have several copies of the same codes. The login process is also annoying since it won't work seamlessly with Proton Pass (email then password, instead of both together). Not sure why they bothered.

★★☆☆☆ Dan Jacko (Jako) · Jun 30, 2026

Had to factory reset my device. All Authenticator codes I had were deleted. Now struggling to access any of my accounts. I didn't have a chance to back up, but I figured a paid app like this would save them. Very disappointed, at least google Authenticator saves them. This is enough for me to move back away from Proton. Can't even access my email.

★☆☆☆☆ Asmodeus · May 21, 2026

Very bad auth app keeps locking me out of my accounts the codes are not working

Google Play Rankings for Proton Authenticator

Top rankings

Rank	Country	Category	List
195	Canada	Productivity	Top Free
200	Germany	Productivity	Top Free
129	Switzerland	Productivity	Top Free
145	Finland	Productivity	Top Free
155	Australia	Productivity	Top Free
186	Netherlands	Productivity	Top Free
193	Sweden	Productivity	Top Free

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Ranking history in Canada

Ranking history

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