Threema

Threema is a secure messaging app that prioritizes user privacy and data protection. Its key purpose is to provide a platform for communication that safeguards your personal information, ensuring that only the intended recipients can access your messages and calls. With end-to-end encryption covering text messages, voice and video calls, group chats, files, and status updates, Threema offers a highly protected communication experience. Unlike many messaging apps, Threema does not require phone numbers or email addresses for registration, allowing you to remain completely anonymous. Each user is assigned a unique Threema ID, making privacy a central feature of its functionality.

Advanced privacy features

Threema is designed to minimize data generation and retention. Messages are deleted from servers immediately after delivery, and all local files are encrypted on your device. Group memberships and contact details remain securely stored on your phone, ensuring they are never saved on servers. Complying fully with European privacy regulations, Threema safeguards metadata and user information effectively against misuse or unauthorized access. Based on the trusted NaCl cryptography library, its encryption system generates keys that are securely stored on your device to prevent backdoor access.

Enhanced communication options

Threema supports a range of communication features, including the ability to send text and voice messages, make encrypted calls, share multimedia and files, and interact using custom polls or reactions. You can also verify contacts using personal QR codes and access the app from your desktop for added flexibility. Its user-friendly design includes optional themes and synchronization options, making it highly versatile.

Threema combines robust privacy measures, transparency through open-source coding, and comprehensive communication tools, establishing itself as a leading secure and anonymous messaging platform.