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Proton Authenticator

Security & privacy

Open-source softwareEditorial overview
A CLOSER LOOK

What is Proton Authenticator?

Proton Authenticator is a cross-platform authenticator for generating offline one-time codes with encrypted synchronization and backup options. It includes offline TOTP codes, encrypted synchronization, and token import and export.

Offline TOTP codes

Encrypted synchronization

Token import and export

Is it a good fit?

Best suited to

Users wanting an authenticator that can work without a Proton account

Before you choose

Synchronization and cloud backup require their corresponding account setup. An authenticator cannot recover an account after all tokens and recovery methods are lost.

Editorial assessment based on the provider’s published information. Our method

Know what you're signing up for.

The application is distributed under GPL-3.0-or-later. The listed desktop or mobile software can be used on an ongoing basis without a software subscription. Synchronization and cloud backup require their corresponding account setup.

Open source

$0application

GPL-3.0-or-later; Synchronization and cloud backup require their corresponding account setup.

  • Offline TOTP codes
  • Encrypted synchronization
  • Token import and export
View official plan

The $0 price applies to the listed open source application. Synchronization and cloud backup require their corresponding account setup.

Check current official pricing

The useful parts. The trade-offs.

Why consider it

Brings offline TOTP codes and encrypted synchronization into the same workflow.

Add and verify a token in offline mode, then choose whether to enable synchronization and backups while preserving the account's independent recovery codes.

What to keep in mind

Synchronization and cloud backup require their corresponding account setup.

An authenticator cannot recover an account after all tokens and recovery methods are lost.

How to use it well

Proton Authenticator fits users wanting an authenticator that can work without a Proton account. Add and verify a token in offline mode, then choose whether to enable synchronization and backups while preserving the account's independent recovery codes.

Synchronization and cloud backup require their corresponding account setup. An authenticator cannot recover an account after all tokens and recovery methods are lost. Match the configuration to your needs, and keep recoverable copies of important settings or keys.

A few things you might be wondering.

Is Proton Authenticator free?

The application is distributed under GPL-3.0-or-later. The listed desktop or mobile software can be used on an ongoing basis without a software subscription. Synchronization and cloud backup require their corresponding account setup.

Can I use Proton Authenticator for offline TOTP codes?

Yes. Proton Authenticator includes offline TOTP codes. Add and verify a token in offline mode, then choose whether to enable synchronization and backups while preserving the account's independent recovery codes.

Can cloud synchronization work without the relevant account setup?

Synchronization and cloud backup require their corresponding account setup.

Where can I check the latest prices?

Use the provider link on this page. Billing period, location, team size, promotions, taxes, and optional extras may affect the amount you pay.

How should I compare this tool with alternatives?

Choose tools for the same task, then compare their feature limits, platform support, and total cost for your team. The Compare button helps you keep a shortlist.

Are the user reviews moderated?

Yes. New reviews are submitted for moderation. We show published user reviews separately from the editorial overview and never assign a default user rating.

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