Cool app
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Archived App (Last seen on 13 Apr 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
Details
About
Secure your documents by locking PDF files with a password or unlock your own protected PDFs. This app offers fast, offline processing with a clean interface. Optional premium features provide unlimited use.
✓Lock PDF files with password
✓Unlock owned PDF files
✓Fast offline processing
✓Clean and simple interface
✓Unlimited locking (premium)
✓Unlimited unlocking (premium)
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What's New in PDF Locker
1.0
December 5, 2025
User reviews
Developer apps
FAQ
How do I lock a PDF with PDF Locker?
To lock a PDF with PDF Locker, select the PDF file you wish to secure and set a password. The app processes files quickly and securely offline.
Can PDF Locker unlock any PDF?
PDF Locker can unlock PDF files that you own and for which you know the correct password. It does not bypass security on PDFs you do not own.
Does PDF Locker work offline?
Yes, PDF Locker is designed for fast offline PDF processing. You do not need an internet connection to lock or unlock your files.
What are the premium features in PDF Locker?
The premium version of PDF Locker offers unlimited PDF locking and unlimited PDF unlocking. These features are available as a one-time purchase.
Is the premium upgrade in PDF Locker necessary?
No, the premium upgrade is optional. All the core free PDF tools for locking and unlocking remain available even if you do not purchase premium.
What is the age rating for PDF Locker?
PDF Locker has an age rating of 12+, making it suitable for users aged 12 and above.
When was PDF Locker last updated?
PDF Locker was last updated on December 5, 2025, with version 1.0.
What devices is PDF Locker available on?
Based on typical app distribution, PDF Locker is likely available on Android and iOS devices, though specific platform details are not provided.