Threema is the world’s best-selling secure messenger and keeps your data out of the hands of hackers, corporations, and governments. The service can be used completely anonymously. Threema is open source and offers every feature one would expect from a state-of-the-art instant messenger. The app also allows to make end-to-end encrypted voice, video and group calls. Using the desktop app and the web client, you can also use Threema from your desktop.
PRIVACY AND ANONYMITY
Threema is designed from the ground up to generate as little data on servers as possible. Group memberships and contact lists are managed on your device only, and never stored on our servers. Messages are immediately deleted after they have been delivered. Local files are stored encrypted on your mobile phone or tablet. All this effectively prevents the collection and misuse of your personal information, including metadata. Threema is fully compliant with the European privacy legislation (GDPR).
ROCK-SOLID ENCRYPTION
Threema end-to-end encrypts all your communication, including messages, voice and video calls, group chats, files, and even status messages. Only the intended recipient, and nobody else, can read your messages. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on the users’ devices to prevent backdoor access or copies.
COMPREHENSIVE FEATURES
Threema is not only an encrypted and private messenger but also versatile and feature-rich.
• Write text and send voice messages
• Make voice, video and group calls
• Share videos, pictures and locations
• Send any type of file (pdf, animated gif, mp3, doc, zip, etc.)
• Use the desktop app or the web client to chat from your computer
• Create groups
• Conduct polls with the poll feature
• Choose between a dark and a light theme
• Quickly and silently reply with the unique agree/disagree feature
• Verify the identity of a contact by scanning their personal QR code
• Use Threema as anonymous instant messaging tool
• Synchronize your contacts (optional)
SERVERS IN SWITZERLAND
All our servers are located in Switzerland, and we develop our software in-house.
FULL ANONYMITY
Each Threema user receives a random Threema ID for identification. A phone number or email address is not required to use Threema. This unique feature allows you to use Threema completely anonymously – no need to give up private information or to open an account.
OPEN SOURCE AND AUDITS
The source code of the Threema app is open for everyone to review. On top of that, renowned experts are regularly commissioned to conduct systematic security audits of Threema’s code.
NO ADS, NO TRACKERS
Threema is not financed by advertising and does not collect user data.
SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq
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User Rating
4.58 out of 5
26 ratings
in Saudi Arabia
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Ratings History
Reviews
Performance has become unsatisfactory
Used to be a good app with occasional issues. But it is now failing to both receive and place calls too frequently. Sometime it doesn’t work whole day showing no data connection, whereas data connection is good and all other apps are working fine at that very moment. Who would like to use such an unreliable app flaw their preferred communication means? I recently switched to iPhone and had to re-purchase the app - Money wasted!
Can’t share files
Hi Threema team,
When I want to call someone ,I have to scroll up until call icon appears could you fix the issue, and If I want to send a file to another app like wahtsapp ,the app crashed.
👍🏻
The application is great, please support arabic language in the application, thank you
?
? When will the Arabic language be added
Amazing texting app !
we love it but we want them to add search within conversations and to be able to exist conversation and type while listening to voice notes
Wonderful app!
I like it to much, because I think the app is truly care about our privacy.
Thank you Threema!
There is a problem with the update
During the outgoing call, if i opening the media (picture in the same application) the connection stops suddenly and strange.
Please we need to solve this small problem as soon as possible.
We need a (message delete) service like other apps
Thank you
رائع ويحتاج لتطوير
التطبيق رائع
اتصالاته واضحة وقوية وبدون تقطيع.
يحتاج إلى خدمات داخلية منافسة للوتساب
أتمنى تعريبه
المستخدمون العرب قلة، وهذه ميزة وعيب.
ممتاز للاشخاص اللي يفضلون الخصوصيه
برنامج رهيب بالنسبه للي يحبون ان كلامهم يكون محمي ومشفر
استخدمه من سنتين الى الان 😉