Proton Authenticator

1.3.10

Proton AG

4.90

12,412 reviews

100,000+
Downloads

Free

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

Proton Authenticator delivers private, offline-first 2FA with open-source transparency and end-to-end encryption. It supports cross-device syncing, biometric unlocking, and Swiss privacy protections, all while staying free and ad-free. The app ranks in the top tier of productivity charts across CH, NL, and NO, with a strong user reception (rating 4.84 from 8,368 reviews) and 100,000+ total downloads 38K in the last 30 days.

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 490 thousand times. In the last 30 days, the app was downloaded 38 thousand times. It is ranked #103 in productivity.

User Ratings

Proton Authenticator is rated 4.90 out of 5 stars. The rating is based on 12 thousand ratings.

App Information

Proton Authenticator is FREE to download. The APK download size is 47.46 MB. The latest version available is 1.3.10. The last update was on July 24, 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	490 thousand
Recent downloads	38 thousand
Rating	4.90 based on 12 thousand ratings
Ranking	Medium ranked
Version	1.3.10
APK size	47.5 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 Laws Free Apps Authenticator Secure Encrypted Device Protect Offline Privacy Account Code

Keywords missing from this app

App Accounts Codes Authentication Security Factor Totp Access Time Data Otp Backup Verification Qr Google Protection Support Password Passwords Generate Online Services Scan Features Devices Mfa Based Step Reliable Multi Securely Phone Login Easy Https Restore Works Easily Setup Simple Multiple

Google Play Rating history and histogram

Rating history

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12K

400

150

Downloads over time

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Proton Authenticator has been downloaded 490 thousand times. Over the past 30 days, it averaged 1.3 thousand 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

★★★★☆ Adam · Jul 16, 2026

Proton makes great stuff and is there authenticator app works wonderfully and has a lot of cool features. The single star deduction is because I simply have questions about security of the authentication codes, and I'm not sure how Security app is on a corrupted system. I don't think that's the company or apps fault, but it's still a factor in my review

★★★★☆ 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.

★★★★★ Andrew Hook · Aug 10, 2026

This is brilliant, I was using Microsoft Auth but that lacked a true code backup feature and codes could only be restored back to its own app. Also The Proton app shows the next code, this saves having to wait for the next one to appear if time is running out.

★☆☆☆☆ Paul · Aug 9, 2026

Does not work frequently the first time, but the second code works if in the US. Never works in Russia. So I am locked out of my paid Proton account on my pc because the authentication codes do not work when I travel - exactly when you need them and the vpn. This is a major failure of Proton. I tried to preempt it by setting up a fido2 key for 2fa BEFORE travel, but it failed to register repeatedly and Proton support took 7 days to respond - which was too late. Now otps don't work, I am locked out

★☆☆☆☆ Ted White · Jul 11, 2026

QR scanner doesn't work. Microsoft Authenticator instantly scanned all three codes that Proton couldn't. Manual setup is strange and produces unacceptable codes.

Google Play Rankings for Proton Authenticator

Top rankings

Rank	Country	Category	List
103	Switzerland	Productivity	Top Free
130	Denmark	Productivity	Top Free
136	Finland	Productivity	Top Free
151	Austria	Productivity	Top Free
156	Netherlands	Productivity	Top Free
161	Australia	Productivity	Top Free
185	Sweden	Productivity	Top Free

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Ranking history in Switzerland

Ranking history

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Technologies used by Proton Authenticator

10 permissions · 11 libraries

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Trust & Safety: Open-source, offline-capable 2FA with end-to-end encryption and Swiss privacy protections. Permissions include CAMERA (for QR code scanning), INTERNET, NOTIFICATIONS, FOREGROUND_SERVICE, RECEIVE_BOOT_COMPLETED, USE_BIOMETRIC, USE_FINGERPRINT, WAKE_LOCK, and a dynamic receiver. Designed with a privacy-focused, transparent approach.

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Proton Authenticator

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

Pros & Cons

About Proton Authenticator

Download Statistics

User Ratings

App Information

Technical Requirements

More data about Proton Authenticator

Alternative downloads for the Proton Authenticator app

Proton Authenticator compared with similar apps

Common keywords of similar apps

Keywords missing from this app

More from Proton AG

Google Play Rating history and histogram

Downloads over time

Changelog of Proton Authenticator

Developer information for Proton AG

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Comments on Proton Authenticator for Android

Google Play Rankings for Proton Authenticator

Top rankings

Ranking history in Switzerland

Technologies used by Proton Authenticator