Locklizard Safeguard Viewer vs Keyless Authenticator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Locklizard Safeguard Viewer
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.
- View secure PDF documents
- Supports PDC files
- DRM protected PDF viewing
- iOS compatibility
- Free to use
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Locklizard Safeguard Viewer for iOS is a FREE app that lets you view Locklizard secure PDF documents (PDC files) on the iPad and iPhone. Safeguard Secure PDF Viewer supports PDC files protected with Safeguard PDF Security and Enterprise PDF DRM. An installation video can be found at https://www.locklizard.com/Videos/Viewers/ios-viewer-install.mp4
Keyless Authenticator
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.
- Zero-knowledge distributed architecture
- GDPR compliant multi-factor authentication
- Biometric verification
- Anti-phishing technology
- Secure, private credential management
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Keyless envisions a world where anyone can seamlessly access any digital service from any device, at any time, while keeping personal credentials safe, private and under control. Where the only key is you. A world that is Keyless. With Keyless zero-knowledge distributed architecture, data can never be stolen or lost because no private information is accessible to the network. Keyless provides GDPR compliant multi-factor authentication with just a look across the enterprise. There is nothing to remember, nothing to type, nothing to lose or to forget. Nothing to remember, means nothing to phish - Keyless embeds strong anti-phishing technology to minimize the risk of fraud and user deception. For more information visit keyless.io
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 September 29, 2026 and October 2, 2026 respectively.
| Parameter | Locklizard Safeguard Viewer | Keyless Authenticator |
|---|---|---|
| Price | Free | Free |
| Rating | 1.8 (8 ratings) | 2.6 (5 ratings) — better |
| Positive reviews | 10.8% of reviews | 94.6% of reviews — better |
| Number of ratings | 8 — better | 5 |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 74 MB | 71 MB |
| Age rating | 4+ | 4+ |
| Developer | LockLizard | Keyless Technologies Limited |
Customer experience
Locklizard Safeguard Viewer
Keyless Authenticator
In-app purchases
Locklizard Safeguard Viewer
No in-app purchases
Keyless Authenticator
No in-app purchases
Questions
Is Locklizard Safeguard Viewer free?
Is Keyless Authenticator free?
Which has better reviews, Locklizard Safeguard Viewer or Keyless Authenticator?
Do Locklizard Safeguard Viewer or Keyless Authenticator have ads?
Which is updated more often, Locklizard Safeguard Viewer or Keyless Authenticator?
Other comparisons
