Comparison

Proton Authenticator & 2FA vs Zero

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

Head to head
About

Proton Authenticator & 2FA

Securely manage your two-factor authentication codes with an open-source, end-to-end encrypted authenticator app. It offers seamless cross-device syncing, effortless import from other apps, and robust backup options, all protected by strict Swiss privacy laws. Take control of your digital security with a trusted and private solution.

Highlights
  • 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
Features
Read full description

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

About

Zero

Features
Read full description

Zero-Friction Tasks is the personal task manager for busy individuals who simply want to get things done – without signing up, without a mandatory subscription, and without complexity. New: just speak your task. NEW: VOICE TASKS. SAY IT – IT BECOMES A TASK. Hands full, in the car, on the go, or cooking? Speak a short note and it lands directly in your list. There are three ways to start: • Tap the microphone in the “Add Task” bar • Press and hold the large + button • Assign the iPhone Action Button: Settings > Action Button > Shortcut > “0F Voice Task” Speak your task and tap “Done.” Recording starts immediately and stops automatically after no more than 20 seconds. Only the recognized text is saved – never the audio recording. When iOS supports on-device speech recognition, it runs directly on your iPhone, so your voice never leaves the device. NO ACCOUNT. NO EMAIL. NO PASSWORD. Download and get started in 10 seconds. No registration. No confirmation email. No password to forget. Zero-Friction Tasks respects your time from the very first second. WHY ZERO-FRICTION TASKS? Most task apps demand an account before you can even begin. Many hide essential features behind complicated plans or store your data unencrypted. Zero-Friction Tasks takes a different approach: • No account required – start in seconds with a simple sync code • Free to start – no trial and no credit card required • End-to-end encrypted (AES-256) – the server never sees your tasks in plain text • Offline mode – core functionality remains available without a connection • Real-time sync – iPhone, Android, Windows, web, and macOS FOR INDIVIDUALS, NOT TEAMS. No Kanban boards. No Gantt charts. No collaboration features. Just your tasks – fast, private, and always available. KEY FEATURES: • Voice Tasks on iPhone – speak tasks instead of typing them • Global hotkey on Windows (Alt+Space) – capture tasks without switching apps • iOS widgets for the Home Screen, Lock Screen, and Today View • Lists for work, home, shopping, and anything else • Pinned tasks – keep what matters at the top • One-time and recurring reminders • Dark Mode and offline mode • Drag-and-drop sorting Start for free. No sign-up. Your tasks, your way. Terms of Use (EULA): https://zerofriction.app/terms Privacy Policy: https://zerofriction.app/privacy

Screenshots

Proton Authenticator & 2FA4 screens
Zero4 screens

Verdict

The call

The clearest difference is in-app purchases: Proton Authenticator & 2FA at none against Zero's 3. Proton Authenticator & 2FA also leads on update cadence (weekly vs monthly) and chart position (#140 vs unranked). Zero's advantage is iOS requirement (15.1 vs 17.0). On price, ads and device support 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. Zero sells 3 in-app purchases, starting at $4.99 per month. Proton Authenticator & 2FA asks for nothing beyond the download.

UpkeepUpdate frequency

Proton Authenticator & 2FA ships an update weekly, Zero monthly. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 7 level
Proton Authenticator & 2FA versus Zero: the parameters behind the verdict, then further details
ParameterProton Authenticator & 2FAZero
PriceFreeFree
Rating4.6 (572 ratings) — better—
Positive reviews57.6% of reviews—
Number of ratings572 — better—
Update frequencyWeekly — betterMonthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
Best chart rank#140 — better—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size120 MB46 MB
Age rating4+4+
DeveloperProton AGMarkus Hoefinger

Bugs and requests

Proton Authenticator & 2FA

Reported bugs

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

Requested features

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

Zero

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Proton Authenticator & 2FA

No in-app purchases

3 purchases

Zero

Subscriptions2
  • Pro Monthly$4.991 Month
  • Pro Yearly$44.991 Year
One-time1
  • Pro Lifetime$89.99

Questions

Is Proton Authenticator & 2FA free?
Proton Authenticator & 2FA is free to download, with no in-app purchases.
Is Zero free?
Zero is free to download, with in-app purchases available.
Do Proton Authenticator & 2FA or Zero have ads?
Neither Proton Authenticator & 2FA nor Zero shows ads.
Which is updated more often, Proton Authenticator & 2FA or Zero?
Proton Authenticator & 2FA ships an update weekly, and Zero monthly. Most recently, Proton Authenticator & 2FA was updated on October 31, 2026 and Zero on October 25, 2026.

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