Threema. The Secure Messenger


Rating: 4.2	Downloads: 5,000,000+
Category: Communication	Offer by: Threema GmbH

Threema. The Secure Messenger is a privacy-focused messaging application offering encrypted communication for iPhone and Android users. It allows sending messages, making calls, and sharing files securely, designed for individuals and businesses needing confidential conversations.

This app provides practical privacy solutions for everyday digital interactions. Its secure features are particularly valuable for professionals discussing sensitive matters and personal users wanting complete control over their communications.

App Features

End-to-End Encryption: All messages, calls, and media sent via Threema. The Secure Messenger are protected with industry-standard 256-bit AES encryption, ensuring only the intended recipients can read them. This fundamental security feature provides complete peace of mind, knowing private conversations remain private from interception.
Self-Destructing Messages: Users can set messages to automatically disappear after a specific time frame, ranging from 5 seconds up to 30 days. This feature enhances privacy by preventing message retention, ideal for sharing sensitive information without it lingering indefinitely.
Contact Sharing: Unlike typical contact import methods, Threema. The Secure Messenger generates unique verification codes for contacts, allowing secure and private addition to your chat list without revealing phone numbers or personal details. This streamlines finding friends and family securely without compromising privacy.
Group Chats with Encryption: Create encrypted group conversations with end-to-end protection, ensuring all participants maintain privacy. This feature is essential for team collaborations, family groups, or any discussion where sensitive information is shared, guaranteeing messages remain confidential among the group members.
Secure Direct Sharing: Send encrypted files, images, videos, and voice notes directly through the app with the same robust security as your messages. Unlike many platforms, these shared files are protected from unauthorized access and surveillance.
Threema Bridge: This optional service securely forwards messages to your email (for iPhone/Android users who opt-in) or via SMS (iPhone users with a Threema SIM card from a participating carrier). It’s a practical solution for sharing Threema content with people outside the app ecosystem, extending your securely encrypted communication to others.

Pros & Cons

Pros:

Military-grade encryption standards
No advertising or tracking by the developers
Dedicated app experience with intuitive UI
Solid cross-platform functionality

Cons:

Initial setup can sometimes be complex
Limited cross-platform calling features
SMS/email bridging requires specific setup
No end-to-end encrypted video calling natively

Similar Apps

App Name	Highlights
Signal Private Messenger	Known for uncompromising encryption, Signal offers many features like disappearing messages and secure voice calls, emphasizing strong privacy by default.
Telegram	Provides robust cloud-based messaging with channels and large groups, though end-to-end encryption is optional for chats, not enforced universally.
ProtonMail	Primarily an email service with built-in client encryption. While excellent for secure emails, it doesn’t replace Threema. The Secure Messenger for messaging.

Frequently Asked Questions

Q: Is Threema. The Secure Messenger completely secure against government surveillance?
A: Threema. The Secure Messenger implements strong end-to-end encryption, meaning messages are scrambled during transmission and only decrypt on the receiving device. However, no private messaging app can guarantee absolute protection against all surveillance methods; the core strength lies in preventing passive monitoring of message content.

Q: Can Threema. The Secure Messenger be used for business communications?
A: Absolutely. Threema. The Secure Messenger is widely used for business due to its encryption features. You can set up groups, share files securely, have encrypted calls (coming soon), and manage teams privately. It offers a practical solution for businesses prioritizing data security.

Q: Are there any hidden costs associated with using Threema. The Secure Messenger?
A: The basic Threema. The Secure Messenger app is completely free. Premium features like Threema Bridge (email/SMS forwarding) require Threema Bridge Gold subscriptions, but core messaging and calling (once supported) remain free for users with the standard app.

Q: How does Threema. The Secure Messenger handle my verification and contacts?
A: Verification involves checking if you have the same name displayed as on the carrier’s SIM card (for iPhone users with Threema SIM) or a unique verification code (for other users). Contact sharing uses secure verification codes, not phone numbers, preserving user privacy.

Q: Can I use Threema. The Secure Messenger alongside apps like WhatsApp or iMessage?
A: Yes, Threema. The Secure Messenger can be downloaded and used alongside other messaging apps without interfering with system messages. While you can’t directly message across platforms, you can share contacts securely using Threema’s verification codes to initiate conversations with others.