# Locklizard Safeguard Viewer — PDF DRM Security

> View Locklizard secure PDF documents on iOS devices. (iPhone/iPad app by LockLizard.)

- Source: https://appshunter.io/ios/app/locklizard-safeguard-viewer/id627385747 (this page in markdown: same URL + `.md`)
- Developer: [LockLizard](https://appshunter.io/developer/627385830)
- Category: Utilities, Productivity
- Price: Free
- Rating: 1.80/5 from 8 App Store ratings · 83 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 74 MB
- Languages: American English
- Released: 2013-04-03
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/locklizard-safeguard-viewer/id627385747/reviews.md

## What is Locklizard Safeguard Viewer?

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

## Key features

- View secure PDF documents
- Supports PDC files
- DRM protected PDF viewing
- iOS compatibility
- Free to use

## Recent user reviews (10 of 83)

All indexed reviews: https://appshunter.io/ios/app/locklizard-safeguard-viewer/id627385747/reviews.md

### 1/5 — Useless

*2025-07-05, version 1.0.23*

This app does not work! It’s a scam!

### 1/5 — Worthless garbage

*2024-10-13, version 1.0.23*

The settings menu literally doesn’t do anything. Turn off show cover page? You still sit through a slow cover page animation every time you open the book. Set high quality rendering? You still get pixelated garbage photos that completely ruin the usefulness of a rock climbing guidebook. Horrible, horrible software.

### 1/5 — Terribile

*2024-03-21, version 1.0.23*

Strumenti scarsissimi, e quei pochi che ci sono (evidenziatore) funzionano malissimo.

### 1/5 — Horrible

*2024-01-21, version 1.0.23*

I understand the need for a locked file but this app is absolutely horrible for textbook to utilize. As students we like to highlight, annotate. This specific textbook no longer allows printed copies, and only utilizes this app. As a student, it’s a horrible option. I can’t properly study, annotate, highlight. With a 12.9 inch iPad it looks dated. This is not a reasonable option for readers. Any textbook company that utilizes this, cares more about profit then students attempting to learn.

### 1/5 — document has expired

*2024-01-01, version 1.0.23*

kitabı indirdikten sonra sadece üç gün kullanabildim sonra açılmadı. tekrar indirdim yine tarihi geçti diyor. lisansımı da yeniledim niye olmuyor?

### 1/5 — Pessima app, fatta con i piedi

*2023-11-23, version 1.0.23*

App di utilizzo poco pratico, priva di contenuti. Non è possibile sottolineare, evidenziare o scrivere semplicemente sulle pagine di un manuale poiché alla fine se cancelli, cancella tutto il lavoro fatto. Do una stella perché 0 non si possono dare.

### 1/5 — Troppo, troppo, troppo basic e con problemi!

*2023-10-20, version 1.0.23*

L’applicazione è necessaria a visualizzare certi tipi di PDF bloccati, quindi la sua funzione è quella di sbloccare il PDF e fin qui ci siamo (forse). Al giorno d’oggi le app per leggere PDF presentano evidenziatori, note, ecc. infatti anche in questa è presente UN evidenziatore (sì, di un solo colore) il quale però, una volta chiuso e riaperto il PDF, è come se non fosse mai stato utilizzato, tutto sparito.
Cari sviluppatori, un’applicazione così mediocre me la può fare un qualunque ragazzino di 18 anni che abbia un diploma di tecnico informatico… spero che col tempo vengano apportati aggiornamenti ma ho seri dubbi.

### 1/5 — Crashes instantly

*2023-10-05, version 1.0.23*

Just crashes, I’ve tried the troubleshooting available on the developers site to no success.

### 1/5 — My license doesn’t work

*2023-09-17, version 1.0.23*

My license is not expire but doesn’t work please fix it.

### 1/5 — :(

*2023-04-12, version 1.0.23*

Üzerine not alma konusunda çok zayıf. Kiraladığınız kitaptan verim alamıyorsunuz.

## Frequently asked questions about Locklizard Safeguard Viewer

### What is Locklizard Safeguard Viewer?

Locklizard Safeguard Viewer is a free iOS application designed to open and view PDF documents that have been secured using Locklizard's Safeguard PDF Security and Enterprise PDF DRM. It allows users to access these protected files on their iPad and iPhone.

### What types of PDF files can I view with this app?

This app specifically supports viewing Locklizard secure PDF documents, which are saved in the .PDC file format. These are PDF files that have been protected with Safeguard PDF Security and Enterprise PDF DRM.

### Is this app free to use?

Yes, Locklizard Safeguard Viewer is a free application. There are no costs associated with downloading or using it to view your secure PDF documents.

### What devices is Locklizard Safeguard Viewer compatible with?

The application is designed for iOS devices, specifically the iPad and iPhone. You can download and use it on these Apple mobile devices to access your secure PDF files.

## Version history (last 5 releases)

### 1.0.31 — 2025-09-22

Improvements:

- Import - Added Import functionality for local files.
- Sort By - Can now filter content by Name, Date and Size.
- Improved Light / Dark Theming 
- Visual Restructure

### 1.0.23 — 2022-06-15

Security improvements

Compatible with iOS 15.5

### 1.0.22 — 2020-06-10

- Bug fix for TOC crash

### 1.0.21 — 2020-04-15

- Support for Apple Download Manager
- Display support for latest iPhones - top document menu is no longer cut-off
- Display support for iPad Pro devices with larger screen sizes – display is no longer stretched
- Improved changes to how publications work
- Improved security
- Default Locklizard splash screen has been removed
- Minimum iOS now supported is 9.1

### 1.0.19 — 2017-09-07

- Bookmarks - create your own custom bookmarks
- Highlights - highlight text and images with rectangles, freehand, or underline
- Automatic license registration - licenses automatically register when uploaded to the Viewer library
- New view settings for document scroller - display always/never/with toolbar
- Search dialog improvements - busy status and cancel option
- Bug fixes for zoom controls - watermarks larger on zoom and page scroller retains zoom settings
- New icons
- Reduced app size

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## Related topics

[pdseetoct](https://appshunter.io/ios/topics/pdseetoct) · [uneti drm](https://appshunter.io/ios/topics/uneti-drm)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*