Comparison

Proton Authenticator vs Glacier App

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

Head to head
About

Proton Authenticator

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

Glacier App

Enhance your mobile privacy with advanced security features. Protect your connection with VPN and DNS security, block trackers and ads, and receive real-time threat alerts. Secure your communications and browse privately without compromising daily usability.

Highlights
  • VPN and DNS protection
  • Tracker and ad blocking
  • Real-time threat alerts
  • Device tampering detection
  • Secure calling with alternate numbers
  • Privacy-focused design
Read full description

Glacier brings intelligence-grade mobile security to your iPhone in a simple, consumer-friendly app. Glacier is a paid app and requires a Monthly or Yearly subscription to use. Protect your connection with VPN and DNS security, block trackers and intrusive ads, and get real-time alerts when your device or network may be at risk. Glacier is built to help you browse privately, reduce exposure to malicious content, and stay in control of your communications without adding friction to daily life. Glacier is designed with privacy by default. Your personal data stays on your device, and Glacier does not read your messages, access your contacts, or monitor your app usage. Features: • VPN and DNS protection for safer private browsing • Blocks many trackers, ad networks, and invasive data collection services • Real-time alerts and clear recommendations when threats are detected • Threat detection for tampering, jailbroken devices, emulation, and active hacking tools • Secure calling using different phone numbers to keep your personal number safe (requires an additional phone line subscription) • Built by a U.S.-based security team with experience protecting high-risk mobile environments Glacier helps protect your device and communications on Wi-Fi, cellular, and while traveling. SUBSCRIPTION & IN-APP PURCHASES Glacier requires a subscription to use the app. Phone-line features are optional add-ons that require a separate purchase on top of the base subscription. Base subscription (required): • Glacier Monthly - $14.99 per month • Glacier Yearly - $159.99 per year Secure phone lines (optional add-ons, auto-renewing): • 1 Line - $4.99 per month • 2 Lines - $8.99 per month • 5 Lines - $19.99 per month One-time purchase (optional): • Extra Phone Number - $2.99 to change your number again if you've already burned it once this month All prices are in U.S. dollars and may vary by region. Your App Store account is charged at confirmation of purchase. Subscriptions renew automatically at the same price unless canceled at least 24 hours before the end of the current period. Manage or cancel your subscription in your App Store account settings. Secure calling and replacement phone numbers are not available until the corresponding subscription or in-app purchase is made. Privacy Policy: https://www.theglacierapp.com/privacy Terms of Use: https://www.theglacierapp.com/terms

Screenshots

Proton Authenticator4 screens
Glacier App3 screens

Verdict

The call

The clearest difference is in-app purchases: Proton Authenticator at none against Glacier App's 6. Glacier App's advantage is chart position (#27 vs unranked). On price, rating, review sentiment and ratings volume 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. Glacier App sells 6 in-app purchases, starting at $4.99 per month. Proton Authenticator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for Proton Authenticator against 4.3 for Glacier App. Both are backed by a comparable volume of ratings — 242 and 269 respectively. Written reviews are what separate them: 56% of Proton Authenticator's written reviews are positive against 61% of Glacier App's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. Both last shipped on September 26, 2026.

Scorecard3 real differences · 8 level
Proton Authenticator versus Glacier App: the parameters behind the verdict, then further details
ParameterProton AuthenticatorGlacier App
PriceFreeFree
Rating4.4 (242 ratings) — better4.3 (269 ratings)
Positive reviews56.3% of reviews60.9% of reviews — better
Number of ratings242269 — better
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
Best chart rank—#27 — better
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS17.0 — better18.0
Further details — not scored
Size119 MB65 MB
Age rating4+4+
DeveloperProton AGSecurity App LLC

Customer experience

Proton Authenticator

All ratings242 ratings
Positive82.2%
Neutral7.4%
Negative10.3%
Written reviews231 reviews
Positive56.3%
Neutral20.8%
Negative22.9%

Glacier App

All ratings269 ratings
Positive82.2%
Neutral3.3%
Negative14.5%
Written reviews115 reviews
Positive60.9%
Neutral6.1%
Negative33.0%

Bugs and requests

Proton Authenticator

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

Glacier App

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Proton Authenticator

No in-app purchases

6 purchases

Glacier App

Subscriptions5
  • 1 Line$4.991 Month
  • 2 Lines$8.991 Month
  • Monthly$14.991 Month
Show 2 more
  • 5 Lines$19.991 Month
  • Yearly$159.991 Year
One-time1
  • Additional Phone Number$2.99

Questions

Is Proton Authenticator free?
Proton Authenticator is free to download, with no in-app purchases.
Is Glacier App free?
Glacier App is free to download, with in-app purchases available.
Which has better reviews, Proton Authenticator or Glacier App?
Proton Authenticator is rated higher. Proton Authenticator averages 4.4 out of 5 from 242 ratings, while Glacier App averages 4.3 from 269 ratings.
Do Proton Authenticator or Glacier App have ads?
Neither Proton Authenticator nor Glacier App shows ads.
Which is updated more often, Proton Authenticator or Glacier App?
Proton Authenticator ships an update weekly, and Glacier App weekly. Most recently, Proton Authenticator was updated on September 26, 2026 and Glacier App on September 26, 2026.

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