Comparison

Paranoia Text Encryption Lite vs Secret Keyboard

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

Head to head
About

Paranoia Text Encryption Lite

Securely encrypt and decrypt sensitive text data, including notes, messages, and cryptocurrency keys. Offers robust security with multiple strong encryption algorithms and advanced steganography features to hide data within images. Also supports secure password exchange using post-quantum cryptography.

Highlights
  • 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
Features
Read full description

• 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

About

Secret Keyboard

This app provides a secure way to send and receive sensitive information through a specialized keyboard. It automatically encrypts your typed messages and allows you to decode received secret messages and sounds by copying them to the keyboard. Customize your typing experience with various themes.

Highlights
  • Send and receive secret messages
  • Decode secret messages and sounds
  • Automatic text encryption
  • Customizable keyboard themes
  • Pro version with auto-decode and ad-free experience
Features
Read full description

The secret keyboard allows you to send and receive secret messages and sounds. It's a safer way of sending and receiving sensitive information. To send a secret message, simply type anything and the text will automatically become secret text as you type. To decode a secret message or a secret sound, simply copy the secret message and tap the unlock button on the secret keyboard to reveal the decoded secret message and play the secret sound. You can also customize your secret keyboard by selecting from the many keyboard themes available. Secret Keyboard Pro - Auto-decode secret text - Auto-play secret sounds - All keyboard themes - No ads The Secret Keyboard app offers three auto-renewing subscriptions and one lifetime purchase. Try Secret Pro for free! Try Secret Keyboard Pro for 3 days, 1 week, or 1 month! • Payment will be charged to iTunes Account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Privacy Policy https://secretkeyboard.com/privacy Terms & Conditions https://secretkeyboard.com/terms

Screenshots

Paranoia Text Encryption Lite4 screens
Secret Keyboard3 screens

Verdict

The call

The clearest difference is in-app purchases: Paranoia Text Encryption Lite at none against Secret Keyboard's 4. Paranoia Text Encryption Lite also leads on ads (none vs shown) and ratings volume (84 vs 6). Secret Keyboard's advantage is update cadence (every 3 days vs every 2 months). On price, rating, review sentiment and iOS requirement 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

Both are free to download. Secret Keyboard sells 4 in-app purchases, starting at $0.99 per 7 days. Paranoia Text Encryption Lite asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Paranoia Text Encryption Lite against 4.3 for Secret Keyboard. That said, the two scores are not equally well evidenced: Paranoia Text Encryption Lite has 84 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 74% of Paranoia Text Encryption Lite's written reviews are positive against 67% of Secret Keyboard's.

UpkeepUpdate frequency

Paranoia Text Encryption Lite ships an update every 2 months, Secret Keyboard every 3 days. The most recent releases landed on October 22, 2026 and October 14, 2026 respectively.

Scorecard6 real differences · 4 level
Paranoia Text Encryption Lite versus Secret Keyboard: the parameters behind the verdict, then further details
ParameterParanoia Text Encryption LiteSecret Keyboard
PriceFreeFree
Rating4.5 (84 ratings) — better4.3 (6 ratings)
Positive reviews74.1% of reviews — better66.7% of reviews
Number of ratings84 — better6
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPod
Requires iOS14.514.0 — better
Further details — not scored
Size18 MB6 MB
Age rating4+4+
DeveloperFrantisek DvorakHex Array Inc.

Customer experience

Paranoia Text Encryption Lite

All ratings84 ratings
Positive84.5%
Neutral4.8%
Negative10.7%
Written reviews27 reviews
Positive74.1%
Neutral7.4%
Negative18.5%

Secret Keyboard

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

None

Paranoia Text Encryption Lite

No in-app purchases

4 purchases

Secret Keyboard

Subscriptions3
  • Secret Keyboard Pro - Weekly3 Days trial$0.997 Days
  • Secret Keyboard Pro - Monthly3 Days trial$1.991 Month
  • Secret Keyboard Pro - Yearly3 Days trial$14.991 Year
One-time1
  • Secret Keyboard Pro - Lifetime$49.99

Questions

Is Paranoia Text Encryption Lite free?
Paranoia Text Encryption Lite is free to download, with no in-app purchases.
Is Secret Keyboard free?
Secret Keyboard is free to download, with in-app purchases available.
Which has better reviews, Paranoia Text Encryption Lite or Secret Keyboard?
Paranoia Text Encryption Lite is rated higher. Paranoia Text Encryption Lite averages 4.5 out of 5 from 84 ratings, while Secret Keyboard averages 4.3 from 6 ratings.
Do Paranoia Text Encryption Lite or Secret Keyboard have ads?
Secret Keyboard shows ads; Paranoia Text Encryption Lite does not.
Which is updated more often, Paranoia Text Encryption Lite or Secret Keyboard?
Paranoia Text Encryption Lite ships an update every 2 months, and Secret Keyboard every 3 days. Most recently, Paranoia Text Encryption Lite was updated on October 22, 2026 and Secret Keyboard on October 14, 2026.

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