Tool profile
Threema
A secure, end-to-end encrypted Swiss instant messenger with a focus on privacy.
What is Threema?
Threema is an instant messenger built specifically for users who prioritize privacy, operating under Swiss jurisdiction with strong legal data protections. It stands out by not requiring a phone number or email address to create an account, thereby reducing the personal information users must share. All messages, voice calls, and files feature end-to-end encryption, and the open source cryptographic protocols allow public review for transparency.
However, users should note that exact pricing details are not listed in the provided data, though it is explicitly described as a paid app that features no advertisements. Additionally, the platform availability listed is limited to Web, which may impact users looking for native mobile applications. Those evaluating options can choose from known alternatives such as Slack, Discord, Element.io, Tox, and Signal depending on their specific communication needs.
Features
Privacy
Threema is built around the idea of user privacy, and it doesn’t require a phone number or email to create an account, thereby reducing the amount of personal information users need to share.
End-to-End Encryption
All communication on Threema, including messages, voice calls, and files, is end-to-end encrypted, ensuring that only the intended recipient can read the messages.
Swiss Jurisdiction
Threema is based in Switzerland, which has strong privacy laws that can offer additional legal protections for user data.
Secure Backup
The app offers an encrypted backup feature, allowing users to safely back up their data without compromising security.
Open Source
Threema's cryptographic protocols are publicly documented and the app’s source code is open for review, enhancing transparency and security.
No Ads
Threema is a paid app with no advertisements, leading to an ad-free user experience.
Screenshots
Threema vs. its alternatives
| Threema |  Slack |  Discord |  Element.io |  Tox | |
|---|---|---|---|---|---|
| Pricing | — | — | Open source | Open source, Free | Open source |
| Platforms | — | ||||
| Listed features | 6 | 6 | 8 | 6 | 5 |
Frequently asked questions
How much does Threema cost?
Threema is a paid app with no advertisements, but check their pricing page for current plans as exact pricing is not listed in the facts.
What is Threema used for?
Threema is used as a secure, end-to-end encrypted Swiss instant messenger with a focus on user privacy for messages, voice calls, and files.
What platforms does Threema support?
Threema is available on Web according to the provided platform facts.
Does Threema require a phone number to sign up?
No, Threema does not require a phone number or an email address to create an account, which reduces the amount of personal information you need to share.
Is Threema open source?
Yes, Threema's cryptographic protocols are publicly documented and its source code is open for review to enhance transparency and security.
What are the best alternatives to Threema?
Known alternatives to Threema include Slack, Discord, Element.io, Tox, and Signal. You might prefer one of these depending on your preferred communication channels and feature requirements.
Alternatives to Threema
Read the full comparison →Slack
A messaging app for teams who see through the Earth!
Discord
Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.
Element.io
Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.
Tox
Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.
Signal
Fast, simple & secure messaging. Privacy that fits in your pocket.
Telegram
Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Wire
Private & Secure Messenger
