Comparison

Proton Mail vs 2FA Authenticator (2FAS)

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Proton Mail

This encrypted email service from Switzerland prioritizes user privacy with end-to-end encryption. It offers robust security features to protect your communications from phishing, spam, and tracking, allowing you to manage your inbox with ease.

Highlights
  • End-to-end encryption
  • Password-protected emails
  • Multiple account support
  • Inbox organization (folders, labels)
  • Dark mode
  • Phishing and spam protection
Read full description

Keep your conversations private. Proton Mail is encrypted email from Switzerland. Used by millions worldwide, our all-new email app protects your communications and has everything you need to easily manage your inbox. The Wall Street Journal says: “Proton Mail offers encrypted email, which makes it virtually impossible for anyone to read it except the sender and the recipient.” With the all-new Proton Mail app, you can: • Create a @proton.me or @protonmail.com email address • Send and receive encrypted emails and attachments with ease • Switch between multiple Proton Mail accounts • Easily manage your email with conversations • Keep your inbox tidy and clean with folders, labels and simple swipe-gestures • Receive new email notifications • Send Password-protected Emails to anyone • Keep important emails in focus with automatic, private categories • Enjoy your inbox in dark mode Why use Proton Mail? • Easy to use — Our all-new app has been redesigned to make it easier to read, organize, and write your emails. • Your inbox is yours — We don’t spy on your communications to show you targeted ads. Your inbox, your rules. • Rigorous encryption — Your entire inbox is secured, on all your devices. No one can read your emails but you. Proton is privacy, guaranteed by end-to-end and zero-access encryption. • Unmatched protection — We offer strong phishing, spam, and spying/tracking protection for all your communications. Industry Leading Security Features Messages are stored on Proton Mail servers using end-to-end encryption at all times and are transmitted securely between Proton servers and user devices. This largely eliminates the risk of message interception. Zero Access to Your Email Content Proton Mail's zero access architecture means that your data is encrypted in a way that makes it inaccessible to us. Data is encrypted on the client side using an encryption key that Proton does not have access to. This means we don't have the technical ability to decrypt your messages. Open-Source Cryptography Proton Mail's open-source software has been thoroughly vetted by security experts from around the world to ensure the highest levels of protection. Proton Mail only uses secure implementations of AES, RSA, along with OpenPGP, while all of the cryptographic libraries used are open source. By using open-source libraries, Proton Mail can guarantee that the encryption algorithms used do not have clandestinely built-in back doors. Proton Mail in the press: “Proton Mail is a Gmail-like email system which uses end-to-end encryption, making it impossible for outside parties to monitor.” Forbes “A new email service being developed by a group who met at MIT and CERN promises to bring secure, encrypted email to the masses and keep sensitive information away from prying eyes.” Huffington Post Follow Proton on social media for all the latest news and offers: Facebook: /proton Twitter: @protonprivacy Reddit: /protonmail Instagram: /protonprivacy Our open-source code base: https://github.com/ProtonMail EULA: http://www.apple.com/legal/itunes/appstore/dev/stdeula

About

2FA Authenticator (2FAS)

Securely log in to your online accounts with two-factor authentication. This app protects your personal data and passwords from cyber threats with a simple, private, and open-source solution. It offers easy token restoration, app protection, and offline functionality.

Highlights
  • Two-factor authentication
  • Token backup and restore
  • App protection with passcode/biometrics
  • Open-source and transparent
  • Offline functionality
  • Cross-device sync
  • One-tap authentication with browser extensions
Features
Read full description

2FAS is the easiest way to enable two-factor authentication (or multi-factor authentication) to verify your identity and securely log in to accounts to keep your personal data and passwords protected from cyber threats — all from one app, 100% free! The world’s most secure, private, and simple 2FA app. Secure: • Easily restore your tokens with backups. • Add app protection with your passcode or biometrics. • 2FAS is open-source, transparent, and community-driven. Simple: • 2FAS syncs across your mobile devices. • An interface designed for simplicity. • One-tap authentication with 2FAS Browser Extensions. • Multi-language support. • Quick guides for setup and support. Private: • 2FAS works offline. • 2FAS doesn't store any passwords or metadata. • 100% anonymous use, no account required. It’s not too late to protect your data, so what are you waiting for? Protect your online accounts and services now with TOTP and HOTP algorithms. Start using the 2FAS authenticator app today! If you have any questions, talk with us on our Discord server: https://discord.gg/q4cP6qh2g5 Learn more about 2FAS: • Check our GitHub repository: https://github.com/twofas • Visit our website at: https://2fas.com/ • Follow us on X: https://x.com/2FAS_com • Subscribe on YouTube: https://www.youtube.com/@2FAS

Screenshots

Proton Mail4 screens
2FA Authenticator (2FAS)4 screens

Verdict

The call

The clearest difference is in-app purchases: 2FA Authenticator (2FAS) at none against Proton Mail's 6. 2FA Authenticator (2FAS) also leads on review sentiment (77% vs 47%). Proton Mail's advantage is update cadence (every 10 days vs monthly) and chart position (#62 vs unranked). On price, rating, ratings volume and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Proton Mail sells 6 in-app purchases, starting at $5.99 per month. 2FA Authenticator (2FAS) asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Proton Mail against 4.7 for 2FA Authenticator (2FAS). Both are backed by a comparable volume of ratings — 48K and 35K respectively. Written reviews are what separate them: 47% of Proton Mail's written reviews are positive against 77% of 2FA Authenticator (2FAS)'s.

UpkeepUpdate frequency

Proton Mail ships an update every 10 days, 2FA Authenticator (2FAS) monthly. Both last shipped on October 16, 2026.

Scorecard5 real differences · 6 level
Proton Mail versus 2FA Authenticator (2FAS): the parameters behind the verdict, then further details
ParameterProton Mail2FA Authenticator (2FAS)
PriceFreeFree
Rating4.8 (48K ratings) — better4.7 (35K ratings)
Positive reviews46.5% of reviews77.4% of reviews — better
Number of ratings48K — better35K
Update frequencyEvery 10 days — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#62 — better—
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS17.2 — better18.6
Further details — not scored
Size272 MB80 MB
Age rating4+4+
DeveloperProton AGTwo Factor Authentication Service Inc.

Customer experience

Proton Mail

All ratings48,309 ratings
Positive94.4%
Neutral2.1%
Negative3.5%
Written reviews1,665 reviews
Positive46.5%
Neutral13.6%
Negative39.9%

2FA Authenticator (2FAS)

All ratings35,401 ratings
Positive93.2%
Neutral2.1%
Negative4.8%
Written reviews721 reviews
Positive77.4%
Neutral5.4%
Negative17.2%

User reviews

Proton Mail

From 48K App Store ratings

What we love

  • 🚀 Smooth performance
  • 🔒 Excellent security and privacy
  • 👍 Clean and intuitive interface
  • 💡 Expanding ecosystem of Proton services

Room to improve

  • 🐛 Occasional crashes and bugs
  • ⏱️ Slow email loading times
  • 📝 Lacking advanced email management features
  • 💰 Expensive paid plans

2FA Authenticator (2FAS)

From 35K App Store ratings

What we love

  • 🚀 Efficient and fast
  • 🔒 Secure and private
  • 👍 Simple and intuitive UI
  • 💡 Customizable icons and folders
  • 🔒 iCloud backup and sync

Room to improve

  • 🐛 Occasional bugs and crashes
  • 🔒 Lack of password/PIN protection
  • 🕰 No Apple Watch app
  • 🐛 Issues with push notifications
  • 🕰 Missing desktop/web app

Bugs and requests

Proton Mail

Reported bugs

3 issues
  • Login issues and lost email data
  • Unreliable push notifications
  • Inconsistent user experience between app and web

Requested features

4 requests
  • Conversation threading and email previews
  • Customizable notification sounds
  • Offline email access
  • Improved syncing across devices

2FA Authenticator (2FAS)

Reported bugs

3 issues
  • Tokens disappearing after device changes
  • Push notification failures
  • Incompatibility with older devices

Requested features

5 requests
  • Alphanumeric passcode option
  • Custom icon uploads
  • Apple Watch app
  • Desktop/web app
  • Improved support and communication

In-app purchases

6 purchases

Proton Mail

Subscriptions4
  • Mail Plus 1 month1 Month trial$5.991 Month
  • Unlimited 1 month$14.991 Month
  • Mail Plus 12 months$47.901 Year
Show 1 more
  • Unlimited 1 year$119.001 Year
One-time2
  • Mail Plus (1 year)$59.99
  • Proton Unlimited$149.99
None

2FA Authenticator (2FAS)

No in-app purchases

Questions

Is Proton Mail free?
Proton Mail is free to download, with in-app purchases available.
Is 2FA Authenticator (2FAS) free?
2FA Authenticator (2FAS) is free to download, with no in-app purchases.
Which has better reviews, Proton Mail or 2FA Authenticator (2FAS)?
Proton Mail is rated higher. Proton Mail averages 4.8 out of 5 from 48K ratings, while 2FA Authenticator (2FAS) averages 4.7 from 35K ratings.
Do Proton Mail or 2FA Authenticator (2FAS) have ads?
Neither Proton Mail nor 2FA Authenticator (2FAS) shows ads.
Which is updated more often, Proton Mail or 2FA Authenticator (2FAS)?
Proton Mail ships an update every 10 days, and 2FA Authenticator (2FAS) monthly. Most recently, Proton Mail was updated on October 16, 2026 and 2FA Authenticator (2FAS) on October 16, 2026.

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