# Zoll vs Proton Authenticator

The clearest difference is review sentiment: Proton Authenticator at 56% against Zoll's 11%. Proton Authenticator also leads on rating (4.4 vs 1.0) and update cadence (weekly vs every 2 months). Zoll's advantage is iOS requirement (15.5 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Proton Authenticator holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Proton Authenticator has 242 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 11% of Zoll's written reviews are positive against 56% of Proton Authenticator's.

Zoll ships an update every 2 months, Proton Authenticator weekly. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Zoll | Proton Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/zoll-ident/id6479045376/reviews) | **[4.4 (242 ratings)](https://appshunter.io/ios/app/proton-authenticator/id6741758667/reviews)** |
| Number of ratings | 2 | **242** |
| Positive reviews | 10.5% of reviews | **55.9% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | Free |
| Size | 57 MB | 119 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Generalzolldirektion](https://appshunter.io/developer/1506592741) | [Proton AG](https://appshunter.io/developer/979659484) |

## What reviewers say

### Zoll

[App page](https://appshunter.io/ios/app/zoll-ident/id6479045376)

This app provides a secure and user-friendly way to log into the Customs Portal and its services. It allows for quick authentication using biometric data after an initial setup with an existing online identity.

**Highlights:** Secure login to Customs Portal, Biometric authentication (Face-ID/Touch-ID), QR code scanning for login, Setup with ELSTER, BundID, or Online ID, Individual user codes for businesses, Accelerated access to services

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Proton Authenticator

[App page](https://appshunter.io/ios/app/proton-authenticator/id6741758667)

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:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

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

**Requested features**

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


## Frequently asked questions

### Is Zoll free?

Zoll is free to download, with no in-app purchases.

### Is Proton Authenticator free?

Proton Authenticator is free to download, with no in-app purchases.

### Which has better reviews, Zoll or Proton Authenticator?

Proton Authenticator is rated higher. Zoll averages 1.0 out of 5 from 2 ratings, while Proton Authenticator averages 4.4 from 242 ratings.

### Do Zoll or Proton Authenticator have ads?

Neither Zoll nor Proton Authenticator shows ads.

### Which is updated more often, Zoll or Proton Authenticator?

Zoll ships an update every 2 months, and Proton Authenticator weekly. Most recently, Zoll was updated on October 14, 2026 and Proton Authenticator on October 16, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*