Comparison

PDF vs PDF Guard(Pro)

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PDF

Secure your documents by adding password protection or remove existing passwords from PDF files. This app also offers tools to merge, extract, and convert PDFs, along with OCR capabilities to recognize text.

Highlights
  • Lock PDF with password
  • Unlock password-protected PDFs
  • Merge multiple PDF files
  • Extract or remove PDF pages
  • Add watermarks to PDFs
  • Scan and recognize text (OCR)
  • Digitally sign PDFs
  • Convert web pages to PDF
Features
Read full description

Instantly lock and unlock PDF password using PDF: Lock & Unlock. Your PDF will be locked or unlocked and ready for download within seconds. Most PDFs can be unlocked! Files with an owner password can be unlocked instantly. However, if the file is thoroughly encrypted, you can only unlock the file by providing the correct password. PDF: Lock & Unlock is the ultimate solution for managing your PDF files with ease and efficiency. Whether you need to secure, edit, or convert PDFs, this powerful iOS application provides all the essential tools in one place. Key Features: Secure & Protect Your PDFs * Lock PDF – Set a strong password to restrict unauthorized access. * Unlock PDF – Remove password protection from encrypted PDFs easily. Edit & Modify PDFs * Merge PDF – Combine multiple PDF files into a single document in seconds. * Page Remover – Delete unwanted pages from a PDF for a cleaner document. * Extract Pages – Select and save specific pages from a PDF as a new file. * Add Watermark – Protect your PDFs with custom text or image watermarks. Text Extraction & Recognition * Text Scanner (OCR) – Scan printed or handwritten text and convert it into digital text. * Text Recognize – Detect and extract text from images or PDF documents with high accuracy. * PDF to Text – Convert PDFs into plain text files for easy editing. Sign & Authenticate Documents * Digital Signature – Add legally binding electronic signatures directly to your PDFs. Convert & Share PDFs * Web to PDF – Save web pages as PDFs for offline reading and sharing. * Fast & Secure Sharing – Share PDFs via email, cloud storage, or messaging apps. How to remove passwords from PDF files: 1. Select your PDF document. 2. Enter your password. 3. Select the option to remove the password. 4. File will save in saved files. 5. Users can share saved pdf files Features: - Users can lock and unlock pdf files. - It is easy to use. - Users can get all saved pdf files. - Users can share pdf files. - Users can delete pdf files. - Users can view pdf files. Main Features : - Lock PDF – Protect your PDFs with a secure password to prevent unauthorized access. - Unlock PDF – Remove password protection from PDFs for hassle-free access. - Merge PDF – Combine multiple PDFs into a single document with just a few taps. - Add Watermark – Insert custom watermarks to protect your documents from unauthorized use. - Text Scanner (OCR) – Extract text from images or scanned documents with high accuracy. - Text Recognize – Convert handwritten or printed text into editable digital text. - Digital Signature – Sign your PDFs electronically for quick and secure document authentication. - Extract Pages – Select and extract specific pages from a PDF file to create a new document. - Web to PDF – Convert web pages into PDFs for offline reading and sharing. - Page Remover – Delete unnecessary pages from your PDF to streamline the document. - PDF to Text – Convert PDFs into editable text files for easy modification. Why Choose PDF: Lock & Unlock? - All-in-One PDF Manager – No need for multiple apps; get everything in one place. - User-Friendly Interface – Simple and intuitive design for easy navigation. - Fast & Efficient Processing – Perform PDF actions in seconds. - Offline Mode – Most features work without an internet connection. - Secure & Private – Your files remain private, with no data leaks. Download and enjoy the PDF: Lock & Unlock app. Privacy Policy: https://softapps.in/App_Privacy.html Terms of use: https://softapps.in/App_TOS.html

About

PDF Guard(Pro)

Features
Read full description

PDF Guard: Your Ultimate Solution for PDF Security and Freedom. Easily lock and unlock your PDF files with precision and confidence. Take control of your document privacy and accessibility in just a few clicks. Guard your information, unlock your convenience. Developed by Anvaysoft Programmer- Hrishi Suthar Made with love in India

Screenshots

PDF4 screens
PDF Guard(Pro)4 screens

Verdict

The call

The clearest difference is price: PDF at Free against PDF Guard(Pro)'s $2.99. PDF also leads on update cadence (every 5 months vs every 20 months). PDF Guard(Pro)'s advantage is in-app purchases (none vs 3) and ads (none vs shown). On device support 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

CostPrice · In-app purchases · Ads · Monetization

PDF is free to download; PDF Guard(Pro) costs $2.99 up front. PDF sells 3 in-app purchases, starting at $4.99 per 7 days. PDF Guard(Pro) asks for nothing beyond the download.

UpkeepUpdate frequency

PDF ships an update every 5 months, PDF Guard(Pro) every 20 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

Scorecard5 real differences · 5 level
PDF versus PDF Guard(Pro): the parameters behind the verdict, then further details
ParameterPDFPDF Guard(Pro)
PriceFree — better$2.99
Rating3.5 (6 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings6 — better—
Update frequencyEvery 5 months — betterEvery 20 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size35 MB22 MB
Age rating4+17+
DeveloperHardik DhameliyaHrishi Suthar

In-app purchases

3 purchases

PDF

Subscriptions3
  • Subscription Weekly$4.997 Days
  • Subscription Monthly$9.991 Month
  • Subscription Yearly3 Days trial$19.991 Year
None

PDF Guard(Pro)

No in-app purchases

Questions

Is PDF free?
PDF is free to download, with in-app purchases available.
Is PDF Guard(Pro) free?
PDF Guard(Pro) costs $2.99, with no in-app purchases.
Do PDF or PDF Guard(Pro) have ads?
PDF shows ads; PDF Guard(Pro) does not.
Which is updated more often, PDF or PDF Guard(Pro)?
PDF ships an update every 5 months, and PDF Guard(Pro) every 20 months. Most recently, PDF was updated on October 24, 2026 and PDF Guard(Pro) on October 9, 2026.

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