Comparison

Proton Authenticator & 2FA vs Thought

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

Thought

Features
Read full description

Thought is a place to pour your mind out — and get it back. A stray idea. The name of a café. A photo of a book cover. The list of things to do when you get home. Type it, photograph it, record it, or paste a link. Thought saves it the moment it happens. Then ask. “Where was that café in Kyoto?” “What was I going to do when I got home?” Ask searches what you saved and answers with your own memory. Capture in a breath Text, photos, voice notes, places, and links. Paste a URL and Thought pulls the card. Record audio and it becomes text. Write #like this and it becomes a filter. Everything on one board Your notes pile into a scrapbook you can wander back through. Drag them, reopen them, search them. There’s a day-by-day list, tags, an archive — and a title on every note, so the important line is the one you see first. Ask your memory Ask answers from what you wrote, said, and saved. On your device, with Apple Intelligence, it’s free forever. Nothing invented: only what you left behind. Thought Pro Cloud AI that can see your photos, text read from pictures, and Thought on the web — the same account, the same board. On-device Thought stays free for everyone. Thought Pro renews automatically until canceled in your App Store settings. Manage or cancel in Settings → Subscriptions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Proton Authenticator & 2FA4 screens
Thought4 screens

Verdict

The call

The clearest difference is in-app purchases: Proton Authenticator & 2FA at none against Thought's 3. Proton Authenticator & 2FA also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement 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. Thought sells 3 in-app purchases, starting at $1.99 per 7 days. Proton Authenticator & 2FA asks for nothing beyond the download.

UpkeepUpdate frequency

Proton Authenticator & 2FA ships an update weekly, Thought every 4 days. The most recent releases landed on October 20, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
Proton Authenticator & 2FA versus Thought: the parameters behind the verdict, then further details
ParameterProton Authenticator & 2FAThought
PriceFreeFree
Rating4.4 (314 ratings) — better—
Positive reviews57.6% of reviews—
Number of ratings314 — better—
Update frequencyWeeklyEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size120 MB90 MB
Age rating4+4+
DeveloperProton AGIgor Duca

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

Thought

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Proton Authenticator & 2FA

No in-app purchases

3 purchases

Thought

Subscriptions3
  • Thought Pro Weekly$1.997 Days
  • Thought Pro Monthly$2.991 Month
  • Thought Pro Yearly$24.991 Year

Questions

Is Proton Authenticator & 2FA free?
Proton Authenticator & 2FA is free to download, with no in-app purchases.
Is Thought free?
Thought is free to download, with in-app purchases available.
Do Proton Authenticator & 2FA or Thought have ads?
Neither Proton Authenticator & 2FA nor Thought shows ads.
Which is updated more often, Proton Authenticator & 2FA or Thought?
Proton Authenticator & 2FA ships an update weekly, and Thought every 4 days. Most recently, Proton Authenticator & 2FA was updated on October 20, 2026 and Thought on October 7, 2026.

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