# Locklizard Safeguard Viewer vs Keyless Authenticator

The clearest difference is review sentiment: Keyless Authenticator at 95% against Locklizard Safeguard Viewer's 11%. Keyless Authenticator also leads on rating (2.6 vs 1.8). On price, ratings volume, update cadence and ads there is nothing between them.

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

Keyless Authenticator holds the better App Store score, 2.6 against 1.8. Both are backed by a comparable volume of ratings — 8 and 5 respectively. Written reviews point the same way: 11% of Locklizard Safeguard Viewer's written reviews are positive against 95% of Keyless Authenticator's.

Locklizard Safeguard Viewer ships an update every 2 months, Keyless Authenticator every 5 weeks. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Locklizard Safeguard Viewer | Keyless Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.8 (8 ratings)](https://appshunter.io/ios/app/locklizard-safeguard-viewer/id627385747/reviews) | **[2.6 (5 ratings)](https://appshunter.io/ios/app/keyless-authenticator/id1494269968/reviews)** |
| Number of ratings | **8** | 5 |
| Positive reviews | 10.8% of reviews | **94.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 74 MB | 71 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LockLizard](https://appshunter.io/developer/627385830) | [Keyless Technologies Limited](https://appshunter.io/developer/1483073057) |

## What reviewers say

### Locklizard Safeguard Viewer

[App page](https://appshunter.io/ios/app/locklizard-safeguard-viewer/id627385747)

This free application allows users to view protected PDF documents on their iOS devices. It supports secure PDF files that have been protected using specific DRM security software.

**Highlights:** View secure PDF documents, Supports PDC files, DRM protected PDF viewing, iOS compatibility, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


### Keyless Authenticator

[App page](https://appshunter.io/ios/app/keyless-authenticator/id1494269968)

Securely access digital services from any device without needing to remember or type credentials. This app offers GDPR-compliant multi-factor authentication using biometric verification, preventing data loss and phishing attacks.

**Highlights:** Zero-knowledge distributed architecture, GDPR compliant multi-factor authentication, Biometric verification, Anti-phishing technology, Secure, private credential management

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Locklizard Safeguard Viewer free?

Locklizard Safeguard Viewer is free to download, with no in-app purchases.

### Is Keyless Authenticator free?

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

### Which has better reviews, Locklizard Safeguard Viewer or Keyless Authenticator?

Keyless Authenticator is rated higher. Locklizard Safeguard Viewer averages 1.8 out of 5 from 8 ratings, while Keyless Authenticator averages 2.6 from 5 ratings.

### Do Locklizard Safeguard Viewer or Keyless Authenticator have ads?

Neither Locklizard Safeguard Viewer nor Keyless Authenticator shows ads.

### Which is updated more often, Locklizard Safeguard Viewer or Keyless Authenticator?

Locklizard Safeguard Viewer ships an update every 2 months, and Keyless Authenticator every 5 weeks. Most recently, Locklizard Safeguard Viewer was updated on October 16, 2026 and Keyless Authenticator on October 15, 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.*