StealthTalk: Private Messenger

In-app purchases
4.1
220 reviews
50K+
Downloads
Content rating
Everyone
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

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
Updated on
May 16, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.1
219 reviews
Zyxl345
April 3, 2021
Dishonest. Plain and simple. There was no indication this is a free trial to a subscription and I only found out after installing and registering. And despite looking in the app and on the website there is no indication of the cost of this subscription, which in itself seems rather sinister to me.
5 people found this review helpful
Did you find this helpful?
StealthTalk Inc
April 7, 2021
Thank you for your feedback! It was never our intention to hide the cost of PRO subscription. Your feedback has brought our attention to the lack of transparency in subscription pricing. We have already made changes to our website to make pricing more clear. Please note, after the PRO trial expires you can continue using StealthTalk for free.
A Google user
January 4, 2020
Fantastic platform and high security. If you are a security expert you can value the data transmission and reception protocols. If you are the sort to like the Mission: Impossible spy type graphics and animations you will love it. All in all I give it 10/10.
76 people found this review helpful
Did you find this helpful?
A Google user
December 11, 2019
Not understanding why this was found today to be adware by lookout mobile. Lookout has always been pretty good and trustworthy. I'm recommending an uninstall until this is figured out. This could be just a fluke with the algorithm they use but still, it's something to note. I use similar message services that come up clean.
15 people found this review helpful
Did you find this helpful?
StealthTalk Inc
December 11, 2019
We understand your concerns. However, as you have mentioned, this must have been a fluke with the algorithm Lookout uses. StealthTalk offers subscription-based communication security services. The app is completely ad-free. Additionally, StealthTalk has passed all Google Play Protect checks with flying colors to ensure it is not misleading users.

What’s new

- Bug-fixes

App support

About the developer
Stealthtalk Inc
info@stealthtalk.com
2145 19th Ave Ste 200 San Francisco, CA 94116 United States
+1 650-427-0527

Similar apps