# SkyMarks vs Proton Authenticator

The clearest difference is rating: SkyMarks at 5.0 against Proton Authenticator's 4.4. Proton Authenticator's advantage is ratings volume (242 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

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

SkyMarks holds the better App Store score, 5.0 against 4.4. 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.

SkyMarks ships an update every 5 days, Proton Authenticator weekly. The most recent releases landed on October 3, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | SkyMarks | Proton Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/skymarks/id6739005862/reviews)** | [4.4 (242 ratings)](https://appshunter.io/ios/app/proton-authenticator/id6741758667/reviews) |
| Number of ratings | 2 | **242** |
| Positive reviews | — | 55.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Free | Free |
| Size | 13 MB | 119 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Old Jewel Software](https://appshunter.io/developer/284830318) | [Proton AG](https://appshunter.io/developer/979659484) |

## What reviewers say

### SkyMarks

[App page](https://appshunter.io/ios/app/skymarks/id6739005862)

This app helps you save and organize posts from the Bluesky social media platform. It allows you to bookmark content from your browser and access it later across all your Apple devices. Features include searching by text, author, or image content, and organizing bookmarks with tags.

**Highlights:** Bookmark Bluesky posts, Cross-device synchronization, Search by text, author, or image, Tagging and filtering, Organize bookmarked content

**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 SkyMarks free?

SkyMarks 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, SkyMarks or Proton Authenticator?

SkyMarks is rated higher. SkyMarks averages 5.0 out of 5 from 2 ratings, while Proton Authenticator averages 4.4 from 242 ratings.

### Do SkyMarks or Proton Authenticator have ads?

Neither SkyMarks nor Proton Authenticator shows ads.

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

SkyMarks ships an update every 5 days, and Proton Authenticator weekly. Most recently, SkyMarks was updated on October 3, 2026 and Proton Authenticator on October 12, 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.*