Comparison

iSecure vs StealthTalk Private Messenger

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

Head to head
About

iSecure

Encrypt your messages with a custom password before sending. Recipients need the correct password to decrypt and read sensitive or confidential information.

Highlights
  • Password-protected messages
  • Message encryption
  • Customizable passwords
  • Secure communication
  • Enhanced privacy for sensitive data
Features
Read full description

iSecure seals your messages so only someone who knows the key can read them. Write a secret, pick a key and tap Seal. Send it in iMessage, share it as a QR code, or paste it into any chat, email or note. Your friend opens it with the same key — nobody in between can read it, and your messages are never stored on a server. SEAL AND SEND • Seal right inside iMessage — the live bubble shows your hint and turns to "Opened" • Share as a QR code or as text to WhatsApp, Telegram, Mail or anywhere • Add a hint so your friend knows which key to use OPEN WITHOUT COPY-PASTE • Long-press a secret in any app → Share → Open in iSecure • Scan an iSecure QR code with the iPhone Camera or inside the app • You always choose the key — nothing opens by itself REVEAL SAFELY • Hold to reveal; the text hides again automatically • Revealed secrets are hidden from screenshots and screen recording • Face ID or your passcode before any saved key is used STRONG KEYS • Generate a 5-word passphrase or a random key in one tap • A strength meter warns you about weak keys • Keys live in the secure iOS Keychain on your device only ISECURE PRO Free: 2 saved keys, 30-second auto-hide, ads. Pro: unlimited keys, seal with a one-time password, choose when secrets hide (10 s to never), burn after reading, and no ads. Pro Yearly with a 1-week free trial, Pro Monthly, or Pro Lifetime. Earlier "Pro" and "No Ads" purchases are honoured. PRIVATE BY DESIGN • Your messages and keys never leave your device unencrypted • AES-256-GCM encryption with a unique salt for every message • The app locks with Face ID or your device passcode Messages sealed with earlier versions of iSecure still open. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage them in Settings › Apple Account › Subscriptions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://aghajanyan.me/isecure/privacy.html

About

StealthTalk Private Messenger

This secure messenger offers end-to-end encrypted voice calls and messages for privacy-conscious professionals. Features include self-destructing messages, a stealth mode for enhanced privacy, and a zero-knowledge architecture.

Highlights
  • Secure voice calls
  • End-to-end encrypted messages
  • Self-destructing messages
  • Stealth mode
  • Zero-knowledge architecture
  • Patented SDNP protocol
Features
Read full description

StealthTalk is a private messenger designed to meet high demands of business- and privacy-minded professionals. Based on a patented SDNP protocol developed for professional use in telecommunications, StealthTalk bridges the gap between professional and consumer security solutions. KEY FEATURES Secure Voice Calls Make secure calls with exceptional voice quality, even with slow internet connection speeds based on TETRA professional communication standards and SDNP protocol. Secure Messages Exchange true end-to-end encrypted messages with all sensitive message data encryption and decryption taking place entirely on the user device. Self-Destruct Messages Send confidential messages that are erased automatically after a selected period of time. Stealth Mode Protected stealth environment for sensitive calls and messages that requires users to enter their password to preview messages or receive calls. PRIVACY & SECURITY End-to-End Encryption All communication within StealthTalk is always protected with end-to-end encryption powered by a patented SDNP protocol that uses ECC 512, AES 256 and SHA-3 512 as primitives. Zero-Knowledge Proof StealthTalk knows nothing about the content of your messages or calls. User data is not collected or stored on StealthTalk servers and cannot be analyzed, sold or disclosed. Professional Telecommunications Technology StealthTalk communication security is based on the patented, tried and field-tested SDNP protocol developed for and used in professional telecommunications. REQUIRED PERMISSIONS StealthTalk requires the following permissions to deliver its private messaging services and ensure all features are operational. • Contacts: Contacts permission is used to match you with your contacts using phone number hashes. StealthTalk does not monetize, collect or store your address book data. • Microphone: Microphone access is required to make secure voice calls • Bluetooth & Location: Bluetooth and location access is needed to locate devices close to you and enable encryption key exchange. • Camera: Camera access is needed to add new contacts via QR code and send pictures with the built-in camera. • Storage: Storage access is needed to store images and files that you receive in chats. For additional information and suggestions, please contact support@stealthtalk.com

Screenshots

iSecure4 screens
StealthTalk Private Messenger4 screens

Verdict

The call

The clearest difference is rating: iSecure at 5.0 against StealthTalk Private Messenger's 3.8. StealthTalk Private Messenger's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, update cadence, in-app purchases and 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

Both are free to download. iSecure sells 3 one-off in-app purchases and StealthTalk Private Messenger sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

iSecure holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: StealthTalk Private Messenger has 10 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

iSecure ships an update every 8 days, StealthTalk Private Messenger fortnightly. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
iSecure versus StealthTalk Private Messenger: the parameters behind the verdict, then further details
ParameteriSecureStealthTalk Private Messenger
PriceFreeFree
Rating5.0 (1 ratings) — better3.8 (10 ratings)
Positive reviews—50.0% of reviews
Number of ratings110 — better
Update frequencyEvery 8 days — betterFortnightly
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.014.0 — better
Further details — not scored
Size20 MB94 MB
Age rating4+4+
DeveloperHovik AghajanyanStealthTalk Inc.

Customer experience

iSecure

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

StealthTalk Private Messenger

All ratings10 ratings
Positive60.0%
Neutral20.0%
Negative20.0%
Written reviews6 reviews
Positive50.0%
Neutral16.7%
Negative33.3%

In-app purchases

3 purchases

iSecure

One-time3
  • Pro Version$3.99
  • Remove Ads$4.99
  • PRO without Ads$7.99
8 purchases

StealthTalk Private Messenger

One-time8
  • StealthTalk Pro (1 month)$4.99
  • StealthTalk PRO (1 Month)$9.99
  • StealthTalk Max (1 month)$9.99
Show 5 more
  • StealthTalk Elite (1 month)$14.99
  • StealthTalk Pro (1 year)$49.99
  • StealthTalk PRO (12 Months)$99.99
  • StealthTalk Max (1 year)$99.99
  • StealthTalk Elite (1 year)$149.99

Questions

Is iSecure free?
iSecure is free to download, with in-app purchases available.
Is StealthTalk Private Messenger free?
StealthTalk Private Messenger is free to download, with in-app purchases available.
Which has better reviews, iSecure or StealthTalk Private Messenger?
iSecure is rated higher. iSecure averages 5.0 out of 5 from 1 ratings, while StealthTalk Private Messenger averages 3.8 from 10 ratings.
Do iSecure or StealthTalk Private Messenger have ads?
iSecure shows ads; StealthTalk Private Messenger does not.
Which is updated more often, iSecure or StealthTalk Private Messenger?
iSecure ships an update every 8 days, and StealthTalk Private Messenger fortnightly. Most recently, iSecure was updated on October 20, 2026 and StealthTalk Private Messenger on October 24, 2026.

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