PDF Secure vs Paranoia File Encryption Lite
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Secure
Secure your PDF documents by adding password protection, ensuring they cannot be opened without authorization. You can also easily remove existing password protection from your files. This app offers a straightforward process for safeguarding your sensitive information.
- Password protect PDF documents
- Remove PDF password protection
- Cross-platform compatibility
- Export to various locations
- Dark mode support
Read full descriptionHide full description
Protect your PDF documents with a password. The PDF won't open without the password. It works on any platform. PDF Secure also allows you to completely remove the password protection of a document. Using PDF Secure is very simple: • Select a PDF document from your files • Choose a password (ideally strong) and do not forget it • Export anywhere (Files app, any cloud drive, E-mail, AirDrop, Messages, ...) → The password will now be requested at any attempt to open the PDF (on all platforms) PDF Secure is compatible with the dark mode. And it's 100% free (no in-app purchases, no ads). NO DATA COLLECTION. Everything happens on device. Your privacy matters. Enjoy!
Paranoia File Encryption Lite
Securely encrypt your private files and folders using robust algorithms. This app creates encrypted archives and offers options to delete original files automatically or manually after encryption. It supports multiple strong encryption ciphers for enhanced data protection.
- Encrypt files and folders
- Create .enc archive files
- Delete original files automatically
- Supports Blowfish, AES, RC6, Serpent, Twofish
- Decrypt PRO version encrypted files
Read full descriptionHide full description
• Paranoia File Encryption is a universal file encryption application for iOS (iPhone/iPad/iPod), brought to you by Paranoia Works. It securely encrypts your private and confidential files or entire folders. P.F.E. works like an archiver, creating a new .enc file after encryption. The original file(s) can be deleted or wiped after the encryption process is completed. This can be done manually or set to be done automatically. • The app guarantees real security by encrypting data using robust encryption algorithms: Blowfish 448 bits, AES 256 bits, RC6 256 bits, Serpent 256 bits, and Twofish 256 bits ciphers. • Steganography: The application offers steganographic features, allowing you to conceal files within a JPEG image. Two algorithms are available: J-UNIWARD and F5. The selected algorithm works with your chosen symmetric cipher to create the final steganogram. • Versions for other systems and platforms are available on the application's homepage (download section - https://paranoiaworks.mobi/download/). • The AES web version is available at: https://pteo.paranoiaworks.mobi/paranoia-file-encryption/ • Free / PRO version differences: The PRO version contains more algorithms - specifically, Threefish 1024bit, SHACAL-2 512bit, and Paranoia C4 2048bit (which is a cascade of Threefish–Serpent–AES–SHACAL2). The free version can decrypt data encrypted by these advanced algorithms, but encryption is exclusive to the PRO version. In addition, the PRO version allows the selection of multiple files and their batch processing. It also provides a key to activate the PRO version of the desktop application: Paranoia File & Text Encryption for PC, Paranoia Text Encryption for PC and S.S.E. File Encryptor for PC
Screenshots
Verdict
PDF Secure and Paranoia File Encryption Lite both sit at 4.9 stars, but that hides the real split: 99% of PDF Secure's written reviews are positive against 71% of Paranoia File Encryption Lite's. PDF Secure also leads on ratings volume (376 vs 2). Paranoia File Encryption Lite's advantage is update cadence (every 2 months vs every 9 months). On price, rating, ads and in-app purchases 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.
On the App Store both sit at effectively the same score — 4.9 for PDF Secure against 5.0 for Paranoia File Encryption Lite. That said, the two scores are not equally well evidenced: PDF Secure has 376 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 99% of PDF Secure's written reviews are positive against 71% of Paranoia File Encryption Lite's.
PDF Secure ships an update every 9 months, Paranoia File Encryption Lite every 2 months. The most recent releases landed on September 24, 2026 and September 17, 2026 respectively.
| Parameter | PDF Secure | Paranoia File Encryption Lite |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (376 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 98.8% of reviews — better | 71.4% of reviews |
| Number of ratings | 376 — better | 2 |
| Update frequency | Every 9 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 13.0 — better | 14.5 |
| Further details — not scored | ||
| Size | 1 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | iSolid apps | Frantisek Dvorak |
Customer experience
PDF Secure
Paranoia File Encryption Lite
In-app purchases
PDF Secure
No in-app purchases
Paranoia File Encryption Lite
No in-app purchases
Questions
Is PDF Secure free?
Is Paranoia File Encryption Lite free?
Which has better reviews, PDF Secure or Paranoia File Encryption Lite?
Do PDF Secure or Paranoia File Encryption Lite have ads?
Which is updated more often, PDF Secure or Paranoia File Encryption Lite?
Other comparisons
