Threema, the Swiss messaging service that has prioritized security since its inception in 2012, has now garnered a substantial user base of over 12 million individuals and approximately 8,000 organizations globally. Recently, ownership of Threema transitioned to Comitis Capital GmbH, marking a new chapter for the platform.
Privacy-Centric Messaging
What sets Threema apart is its unique approach to user identity. Unlike many messaging apps that require a phone number or email address, Threema assigns users a random eight-digit ID. This innovative method ensures that all contacts, groups, and profiles are stored locally on the user’s device rather than on a central server. Once a message is sent, it is promptly deleted from Threema’s servers after delivery, with no connection data being logged.
Threema operates on a paid model, requiring a one-time payment of for personal use. It is readily accessible through major app stores and the Threema Shop, which accommodates anonymous payment methods, further enhancing user privacy.
Why we like it: Threema’s commitment to removing personal identity from the messaging equation is commendable. By keeping servers silent and empowering users with control over their data, it maintains a clean business model. For those who prioritize privacy by design over mere promises, Threema exemplifies this ethos.
Robust Security Features
At its core, Threema employs high-grade cryptography based on the open-source NaCl library. Each message benefits from dual-layer encryption: one layer secures the communication between users, while the other safeguards the connection to the server. This encryption strength is comparable to 2048-bit RSA and incorporates Perfect Forward Secrecy, ensuring that messages remain confidential.
Users can engage in various forms of communication, including text and voice messages, file sharing up to 100 MB, and the transmission of photos, videos, or locations. Additionally, messages can be edited or deleted on the recipient’s device within a six-hour window. Voice and video calls, including group calls with up to 16 participants, are end-to-end encrypted, and local group management allows for up to 256 members.
Target Audience
Who it’s for:
- Individuals seeking strong privacy without the need to share personal details.
- Users who prefer the robust data protection standards typical of European regulations.
- Professionals and organizations with stringent compliance requirements.
- Anyone willing to invest once in a privacy-first product.
Who should look elsewhere:
- Users in search of a free app with extensive reach.
- Individuals who depend on large public groups or channels for communication.
- Those who favor cloud-based chat history as a default feature.
Threema Features
- End-to-end encrypted messaging and calls.
- Threema ID without the need for a phone number.
- Open-source mobile applications.
- QR-based contact verification for added security.
- Encrypted voice and video calls.
- Polls and local group management capabilities.
- Secure desktop and multi-device support.
