# Paranoia Text Encryption Lite — (encrypt notes, messages, …)

> Secure text encryption and steganography app with post-quantum password exchange. (iPhone/iPad app by Frantisek Dvorak.)

- Source: https://appshunter.io/ios/app/paranoia-text-encryption-lite/id1092955070 (this page in markdown: same URL + `.md`)
- Developer: [Frantisek Dvorak](https://appshunter.io/developer/935278497)
- Category: Utilities, Social Networking
- Price: Free
- Rating: 4.50/5 from 84 App Store ratings · 27 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.5 · 18 MB
- Languages: American English, Arabic, Dutch, French (France), German (Germany), Hindi, Italian, Japanese, Korean, European Portuguese and 4 more
- Released: 2016-04-30
- Data updated: 2026-08-23
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/paranoia-text-encryption-lite/id1092955070/reviews.md

## What is Paranoia Text Encryption Lite?

• Paranoia Text Encryption is a comprehensive text encryption application for iOS devices (iPhone/iPad/iPod) and macOS, developed by Paranoia Works.
• Paranoia Text Encryption safeguards your notes, SMS messages, emails, social networking posts, cryptocurrency keys (seeds, mnemonics), and any other text from unwanted readers.
• Simply copy and paste text to and from your favorite applications, or save it to a file for future use.
• This app does not function as a "vault application." Instead, a password is set for the current encryption/decryption session, not to enter the app itself. You may use an unlimited number of passwords for any purpose—different files, tasks, people, etc.
• The app guarantees robust security by encrypting data using strong encryption algorithms: Blowfish (448-bit), AES (256-bit), RC6 (256-bit), Serpent (256-bit), and Twofish (256-bit) ciphers.
• Steganography: The application includes steganographic features, allowing you to conceal text or files within a JPEG image. Two algorithms are available: J-UNIWARD (content-adaptive, minimizes visual distortion, harder to detect) and F5 (matrix encoding, efficient embedding). The selected algorithm works with the chosen symmetric cipher to produce the final steganogram.
• Key Encapsulation (KEM): Securely exchange encryption passwords using the post-quantum ML-KEM mechanism (NIST FIPS 203). Two parties can establish a shared password without ever transmitting it directly, with protection against future quantum computer attacks.

◆ Differences between Free and PRO versions: The PRO version offers additional encryption algorithms, specifically Threefish (1024-bit), SHACAL-2 (512-bit), and Paranoia C4 (2048-bit), which is a cascade of Threefish–Serpent–AES–SHACAL-2. While the free version can decrypt data encrypted by these advanced algorithms, the ability to encrypt data using these algorithms is exclusive to the PRO version. The PRO version also provides a key to activate the PRO versions of desktop applications: Paranoia File & Text Encryption for PC, Paranoia Text Encryption for PC, and S.S.E. File Encryptor for PC.

• The application is natively compatible with macOS (10.15 and later). Versions for other systems and platforms can be downloaded from the application homepage: https://paranoiaworks.mobi/download/.
• An online (web-based) version, utilizing AES and client-side JavaScript, and other utilities are available at https://pteo.paranoiaworks.mobi

## Key features

- Text encryption and decryption
- Steganography (hide text in JPEG)
- Post-quantum key encapsulation
- Multiple strong encryption algorithms
- Copy/paste and file saving
- Session-based password management

## Recent user reviews (10 of 27)

All indexed reviews: https://appshunter.io/ios/app/paranoia-text-encryption-lite/id1092955070/reviews.md

### 4/5 — Muss Man üben

*2026-01-22*

Bisl testen. Aber ist nicht einfach

### 5/5 — Соси, Макс

*2025-12-29*

Очумительное качество и скорость

### 5/5 — Trust

*2024-09-25*

I no longer trust the easy online wallets for passwords and codes. I use PTE and rotation passwords and have for the last couple of years.  My ID has been robbed at least 3 times through data breaches hitting the US gov and other places. TRUST no one. Encrypt your sensitive data yourself. Freeze your credit history.

### 3/5 — da geht noch was

*2024-03-08*

die Funktion ist ok, aber mir fehlt der Dark Mode.
So ist bei dunkler Einstellung die Schrift schwarz und das Programm nicht zu verwenden.

### 2/5 — ключ закрыт и меняется динамически, нельзя передать ключ

*2023-04-13*

нет опции установить собственный ключ и IV для encrypt/decrypt

### 5/5 — Great app

*2023-02-28*

Straightforward text encryption with multiple variations of method. I also love the added feature of hiding text in pictures.

Great job. 

Very cool indeed.

### 4/5 — Fast perfekt

*2023-01-15*

Fast perfekt, nur, ein Stern Abzug für das antike UI und die nicht intuitive Bedienung.

### 1/5 — disappointed

*2022-07-03*

"upgrading" to Monterey destroyed my ability to use 90% of my legacy software, including iStego. While searching for any free steganography software that was free and usable on my now crippled mac mini (thanks for nothing Monterey), this Paranoia Text Encryption software claimed it could do steganography. Instead of conveniently letting you drop a file of your choice onto an image of your choice and ending up with a file hidden in an image with little fuss, PTE makes it practically impossible. Perhaps someone will figure it out, but my patience wore thin and I gave up after wasting time. Not intuitive or user friendly, and not worth the time I wasted trying to get it to work.

**Developer response:** This is (as the name suggests) text encryption software. If you want to work with general files, I would recommend looking for something like FILE encryption/steganography.

### 2/5 — Not For Infrequent Users

*2021-12-08*

Each time i use this i type a bunch of great ideas, then proceed to irretrievably lose everything I types - zilch!  The terrible part about this program is it is not prepared for people like me that has not memorized all the controls and don’t realize that after i create encrypted text and i think im cleaning up the readable text so i hit the broom, and EVERYTHING I JUST TYPED IS IRRETRIEVABLY GONE WITHOUT ANY WARNING, so its my fault that it doesnt have safeguards for human operators.  So, not for me.

### 3/5 — Scroll

*2021-05-28*

I have the same problem as yazo675

**Developer response:** Please update your iOS.

## Frequently asked questions about Paranoia Text Encryption Lite

### What does Paranoia Text Encryption Lite do?

This application allows you to encrypt and decrypt text data, safeguarding notes, messages, emails, and cryptocurrency keys from unauthorized access. It uses strong encryption algorithms and offers steganography to hide text within images.

### What are the key features of this app?

Key features include robust encryption with algorithms like Blowfish and AES, steganography for hiding text in JPEG images using J-UNIWARD or F5, and post-quantum Key Encapsulation (KEM) for secure password exchange. You can also easily copy and paste text or save it to files.

### Is this app free to use?

The Lite version of Paranoia Text Encryption is free. While it offers a comprehensive set of encryption features, the PRO version provides access to additional advanced encryption algorithms and desktop application licenses.

### What devices is this app compatible with?

The application is natively compatible with iOS devices (iPhone, iPad, iPod) and macOS (version 10.15 and later). Versions for other systems and platforms can be downloaded from the developer's homepage.

### How does the password system work?

This app does not function as a vault. Instead, you set a password for each encryption or decryption session. You can use an unlimited number of passwords for different purposes, files, or individuals, without needing to log into the app itself.

## Version history (last 5 releases)

### 3.14 — 2026-07-27

• Help updated;

### 3.13 — 2026-07-02

• The Steganogram dialog has been extended to display the maximum capacity for embedded data in the steganogram.
• The File Encryption app is now newly available for macOS on the Apple App Store, alongside the previously released iOS version.

### 3.12 — 2026-04-20

• Added Dutch localization and updated help documentation.
• Added an "Export as URL" option.
• New compatible web apps are available at: https://pteo.paranoiaworks.mobi

### 3.11 — 2026-04-07

• New steganographic algorithm: J-UNIWARD — content-adaptive embedding that minimizes visual distortion and is harder to detect. The classic F5 algorithm remains available.
• File steganography: You can now encrypt and hide files (not just text) inside JPEG images.
• Key Encapsulation (KEM): Securely exchange encryption passwords using post-quantum ML-KEM (NIST FIPS 203). No password is ever transmitted directly.
• Base62 output encoding option added.
• Cross-app password sharing: Send KEM passwords directly to other installed Paranoia apps.
• New compatible web apps are available at: https://pteo.paranoiaworks.mobi/

### 3.10 — 2025-05-09

• Added localizations for German, French and Italian;

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## More apps by Frantisek Dvorak

- [Paranoia Text Encryption PRO](https://appshunter.io/ios/app/paranoia-text-encryption-pro/id935278498)
- [Paranoia File Encryption Lite](https://appshunter.io/ios/app/paranoia-file-encryption-lite/id6449292954)
- [Paranoia File Encryption PRO](https://appshunter.io/ios/app/paranoia-file-encryption-pro/id6449606072)

All apps by Frantisek Dvorak: https://appshunter.io/developer/935278497

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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 2026-08-23.*