Kryptos Private Messenger vs StealthTalk Private Messenger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kryptos Private Messenger
A secure messaging app that prioritizes user privacy by not requiring any personal information for participation. Communicate freely without compromising your identity.
- No personal information required
- Private communication
- Secure messaging
- Anonymous participation
Read full descriptionHide full description
Messenger application which does not require any personal information from participants.
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.
- Secure voice calls
- End-to-end encrypted messages
- Self-destructing messages
- Stealth mode
- Zero-knowledge architecture
- Patented SDNP protocol
Read full descriptionHide 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
Verdict
The clearest difference is review sentiment: Kryptos Private Messenger at 100% against StealthTalk Private Messenger's 50%. Kryptos Private Messenger also leads on rating (5.0 vs 3.8) and in-app purchases (none vs 8). StealthTalk Private Messenger's advantage is update cadence (fortnightly vs every 8 months) and ratings volume (10 vs 2). On price, ads, monetization model 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
Both are free to download. StealthTalk Private Messenger sells 8 one-off in-app purchases. Kryptos Private Messenger asks for nothing beyond the download.
Kryptos Private Messenger 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 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Kryptos Private Messenger's written reviews are positive against 50% of StealthTalk Private Messenger's.
Kryptos Private Messenger ships an update every 8 months, StealthTalk Private Messenger fortnightly. The most recent releases landed on October 17, 2026 and October 24, 2026 respectively.
| Parameter | Kryptos Private Messenger | StealthTalk Private Messenger |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 3.8 (10 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 2 | 10 — better |
| Update frequency | Every 8 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 11.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 22 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | Yurii Melashchenko | StealthTalk Inc. |
Customer experience
Kryptos Private Messenger
StealthTalk Private Messenger
In-app purchases
Kryptos Private Messenger
No in-app purchases
StealthTalk Private Messenger
- StealthTalk Pro (1 month)$4.99
- StealthTalk PRO (1 Month)$9.99
- StealthTalk Max (1 month)$9.99
Show 5 moreShow fewer
- 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 Kryptos Private Messenger free?
Is StealthTalk Private Messenger free?
Which has better reviews, Kryptos Private Messenger or StealthTalk Private Messenger?
Do Kryptos Private Messenger or StealthTalk Private Messenger have ads?
Which is updated more often, Kryptos Private Messenger or StealthTalk Private Messenger?
Other comparisons















