# Proton Authenticator — Secure 2FA Authenticator

> Secure, open-source, end-to-end encrypted 2FA authenticator with Swiss privacy. (iPhone/iPad app by Proton AG.)

- Source: https://appshunter.io/ios/app/proton-authenticator/id6741758667 (this page in markdown: same URL + `.md`)
- Developer: [Proton AG](https://appshunter.io/developer/979659484)
- Category: Productivity, Utilities
- Price: Free
- Rating: 4.40/5 from 242 App Store ratings · 231 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 119 MB
- Languages: American English, Dutch, French (France), German (Germany), Italian, Polish, Brazilian Portuguese, Russian, Latin American Spanish, Turkish
- Released: 2025-07-31
- Data updated: 2026-08-29
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/proton-authenticator/id6741758667/reviews.md

## What is 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 — with full control over where your data is stored.

KEY FEATURES
Local-First Storage:Your 2FA codes are stored entirely on your device, giving you complete control over your data.

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

## Key features

- End-to-end encrypted iCloud sync
- Effortless import from other authenticators
- Secure backup and export
- Swiss privacy by design
- Open source and transparent
- Offline support

## What do users think of Proton Authenticator?

Overall sentiment: positive

**Pros**

- 🚀 Cross-platform support
- 🔒 Secure cloud sync
- 👍 Easy import from other authenticators
- 🚀 Convenient 'next' feature for codes

**Cons**

- 🐛 Buggy UI (scrolling jitters, random sorting)
- 👎 Lack of customization options (pin favorites, change icons)
- 🐛 Sync/login issues on iPad

**Commonly reported bugs**

- Sync/login loop on iPad
- 2FA input broken on non-iPhone devices
- Screen strobing on iPad
- Duplicate entries after import

**Most requested features**

- PIN unlock for desktop
- Alphabetical sorting option
- Export function (not just Proton-specific backup)
- Native macOS app
- Option to hide item icons

## Recent user reviews (10 of 231)

All indexed reviews: https://appshunter.io/ios/app/proton-authenticator/id6741758667/reviews.md

### 4/5 — Super mais 3 petites choses à dire

*2026-08-26*

L’app est vraiment excellente, la plus propre et fonctionnelle que j’ai testé (et j’en ai testé pas mal !).
3 petits changements seraient toutefois les bienvenus :
- sur l’écran d’accueil, l’app s’appelle « ProtonAuthentic… ». Un nom plus court qui ne serait pas tronqué serait évidemment mieux.
- il est impossible de personnaliser les images illustrants les comptes. 
Exemple : un compte nommé « Amazon » aura bien le logo de l’entreprise mais un compte nommé « Amazon Julien » et un 2ème « Amazon Aurélie » auront droit à l’initiale du titre seulement.
- pas mal de sites ne sont pas reconnus et n’ont donc pas droit à leur logo (Adobe, Airtm, ChatGPT, DeepL, etc…). Pourquoi ne pas laisser l’utilisateur importer ses propres images ?

### 5/5 — Solid

*2026-08-22*

My go-to 2FA. Syncs to my other devices.

### 3/5 — Ganz OK, aber …

*2026-08-13*

Ansich eine Super App, aber ein Feature fehlt, dass ich nicht nachvollziehen kann. Ich nutze einen Passwortmanager. Dieser wird mit Biometrie entsperrt. Um die sicherheit zu erhöhen habe ich für einige Dienste 2FA, ebenfalls als Handy-App. Diesen möchte ich natürlich auf eine andere weise entsperren als meinen Passwortmanager. Bei Proton geht aber nur Biometrie oder eben nichts. Keine PIN kein Passwort. Dass kann doch nicht das Problem sein eine Passwortabfrage zu Implementieren. Ohne, ist diese App nur für Leute ohne Passwortmanager auf dem Handy oder Leite die den Passwortmanager mit was anderem entsperren als Biometrie.

Schade eigentlich, sobald eine Umfangreichere App-Sperre integriert wird wechsle ich direkt!

**Developer response:** Thank you for the feedback. We've added your +1 to the existing feature requests so that our team can prioritize them accordingly. You can follow our blog and socials for any news and updates.

### 5/5 — Melhor 2FA

*2026-08-10*

Uso a meses e recomendo, nunca tive nenhum problema!

### 3/5 — I was too optimistic

*2026-08-09*

I wish that the Proton Authenticator let you independently set a pin to the app separate to the passcode for your device if you are not using biometrics like you can with the desktop version. I don’t want to use biometrics on my devices. Ever! Nowhere was this behaviour discussed before I started using the app. I did not expect for it to be a case of use biometrics or be locked to your passcode. Disappointing. I do not appreciate the security risk Proton Authenticator has put me under. Passcodes can be overseen or otherwise stolen when used frequently from the plethora of security cameras and the ethics of those behind those cameras. Add the ability to create a custom pin/password so that my codes are more secure, please.

The other missing customisation that I find with Proton Authenticator is that there is no way to customise the icons for the tokens/accounts. Any change to the title changes the icon into a generic letter that doesn’t stand out. If you have multiple accounts from the same company it becomes impossible to tell them apart. If you could add your own icon you could then group the accounts by client or in a way that makes sense. Right now it is very difficult to do that. To the actual authenticator. It does what you would expect. It is nice that you can see the code coming up next so you can start to type that in if there isn’t much time left on the current code. But that is something I think should be standard. I want to see you do better.

**Developer response:** Thank you for the review. We've passed on your feedback to the team for future consideration. You can follow our blog and socials for any news and updates.

### 1/5 — Broken liability

*2026-08-08*

The app only works on set up, after this of you need to sign in the codes do not work. 
Tried multiple times. This app will cause you to be locked out of your account.
Like many proton offerings- poor implementation.
Also tried the enhanced security- longer codes. These do not work ever! What a broken system

**Developer response:** That doesn't sound right. Could you share more details about the issue? Are you receiving any error messages? Which web service(s) are you receiving incorrect 2FA codes for? Are the date and time on your device correct? Contact us using the "Feedback" option in the app settings so we can investigate further.

### 4/5 — Code Accidental Deletion

*2026-08-04, version 1.4.3*

I have seen another comment on this review page talking about this same design flaw. I would feel a lot more comfortable if I knew that accidentally swiping away an authentication code is not possible. Please fix this in the next update, there is no reason to keep this ‘feature’

### 1/5 — Great app when it works

*2026-07-30*

I open the app and try to get my codes but its just stuck on the splash screen after face ID step. Looks like i will need to switch but not sure how as i cant get in the app💀

Figured it out its because im screen sharing (i am a mobile developer and always cast to my laptop)

**Developer response:** That doesn't sound right. Could you share the specific steps you're taking that lead to this issue? How exactly are you mirroring your iPhone's screen (e.g. using QuickTime Player, or iPhone Mirroring)? Contact us through the contact form on our website with more details so we can have a better understanding of the behavior and help you further.

### 5/5 — UI Design

*2026-07-25, version 1.4.3*

I just miss the grainy/noisy grey background UI design, it was removed 😢

### 1/5 — Stopped working

*2026-07-23, version 1.4.3*

Stopped working with newest updates everything is crashing

## Frequently asked questions about Proton Authenticator

### What does Proton Authenticator do?

Proton Authenticator is an app designed to securely store and generate your two-factor authentication (2FA) codes. It helps protect your online accounts by requiring a second verification step beyond just your password, ensuring enhanced security.

### What are the key features of Proton Authenticator?

Key features include end-to-end encrypted iCloud sync for seamless cross-device access, effortless import from other authenticator apps like Google Authenticator, secure backup and export options, and a strong commitment to Swiss privacy laws. It is also open source and ad-free.

### Is Proton Authenticator free to use?

Yes, Proton Authenticator is completely free to use. No Proton account is required, and the app is ad-free, offering a private and secure experience without any cost to the user.

### What devices is Proton Authenticator compatible with?

The app offers offline support on both mobile and desktop applications, suggesting broad compatibility across various platforms. This allows you to access your 2FA codes even without an internet connection.

### How does Proton Authenticator ensure privacy and security?

It is built under Switzerland's strict data protection regulations and utilizes end-to-end encryption for all synced data. The app is also open source, meaning its code is auditable, and it does not track users or display ads, prioritizing user privacy.

## Version history (last 5 releases)

### 1.4.4 — 2026-08-26

Improved app stability, accessibility, and backup options

### 1.4.3 — 2026-06-25

- Improved animations for a smoother scrolling experience
- Fixed issues with search functionality

### 1.4.2 — 2026-06-22

- Several bug fixes
- iCloud sync re-added, but with a warning

### 1.4.1 — 2026-04-27

Your 2FA codes now live entirely on your device, giving you complete control over your security. We’ve introduced significant improvements to the backup screen, featuring a new system that works seamlessly to ensure your data remains secure and accessible. Alongside these functional upgrades, we’re celebrating the adoption of our new Liquid Glass design. The app now embraces this latest design language, delivering a more modern and native experience that feels fresh and intuitive.

### 1.4.0 — 2026-04-22

Your 2FA codes now live entirely on your device, giving you complete control.
We’ve moved beyond the limitations of Apple’s iCloud SDK to bring you a new backup system that works seamlessly with any drive, including Proton Drive, Dropbox, iCloud Drive, and more.
Celebrate with us the new adoption of Liquid Glass design. The app now embraces the latest design language, delivering a more modern and native experience.

## Apps similar to Proton Authenticator

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## More apps by Proton AG

- [Proton Mail - Encrypted Email](https://appshunter.io/ios/app/proton-mail-encrypted-email/id979659905)
- [Proton VPN: Fast & Secure](https://appshunter.io/ios/app/proton-vpn-fast-and-secure/id1437005085)
- [SimpleLogin - Email alias](https://appshunter.io/ios/app/simplelogin-email-alias/id1494359858)
- [Proton Drive: Cloud Storage](https://appshunter.io/ios/app/proton-drive-cloud-storage/id1509667851)
- [Proton Calendar: Secure Events](https://appshunter.io/ios/app/proton-calendar-secure-events/id1514709943)
- [Proton Pass - Password Manager](https://appshunter.io/ios/app/proton-pass-password-manager/id6443490629)

All apps by Proton AG: https://appshunter.io/developer/979659484

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*