Threema
by Threema GmbH
🗂️ Communication
Version 1,000,000+
đź“… Updated May 24, 2022
Threema is the messenger with the most consistent focus on security and privacy.
Features Threema
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, allows to make end-to-end encrypted voice and video calls, and offers every feature one would expect from a state-of-the-art instant messenger.
With Threema Web, you can also use Threema from your Desktop.nnPRIVACY AND ANONYMITYnThreema 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).nnHIGHEST ENCRYPTION STRENGTHnThreema 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 users’ devices to prevent backdoor access or copies.nnCOMPREHENSIVE FEATURESnThreema is not only an encrypted and private messenger but also versatile and feature-rich.nn• Write text and send voice messagesn• Make voice and video callsn• Share videos pictures and locationsn• Send any type of file (pdf animated gif, mp3, doc, zip, etc.)n• Use Threema Web to chat from your Desktopn• Create groupsn• Conduct polls with the poll featuren• Choose between a dark and a light themen• Quickly and silently reply with the unique agree/disagree featuren• Verify the identity of a contact by scanning their personal QR coden• Use Threema as anonymous instant messaging tooln• Synchronize your contacts (optional)nnSERVERS IN SWITZERLANDnAll our servers are located in Switzerland, and we develop our software in-house.nnFULL ANONYMITYnEach 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.
nnOPEN SOURCE AND AUDITSnThe 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.nnNO ADS, NO TRACKERSnThreema is not financed by advertising and does not collect user data.
nnSUPPORT / CONTACTnFor questions or problems please consult our FAQs: https://threema.ch/en/faq
Secure & Private
Your data is protected with industry-leading security protocols.
24/7 Support
Our dedicated support team is always ready to help you.
Personalization
Customize the app to match your preferences and workflow.
See the Threema in Action
What Our Users Say
Don't just take our word for it. Here's what our users have to say about our Android app.
"Hi, can you add option for edits message for sent message?"
Sasha Bilous
"great app for privacy. on th ui-ux side needs some more work to make it similar to the common messaging apps"
Michael Werner
"It's difficult to log into and sometimes the app forgets 1"
Crystal Greenwood
"Incredible app and experience!"
Merrick Schaefer
"A fantastic privacy focused messaging app. The developer has improved the app with each update, although some messages can be delayed when sending via mobile data, though this isn't a huge issue for me."
Jean-Paul Hackett
"The only messenger in existence that offers real security in every aspect."
Gruens Froeschli
"I couldn't pay for it"
Mr Ceri J Fisher Imdb
"Only choice if you value privacy"
Milton Wee
"I recently purchased Threema app and tried setting a new account. Inadvertently, I uninstalled the app and tried setting up the account multiple times and now I'm not allowed to set up an account. I see the message TA001: VP003: Too many IDs created for this purchase. Please help me in setting up the account."
Mary S
"I really enjoy the privacy and security Threema offers. It has a lot of great features and is easy to use."
Alan Rupnick
Get the App Today
Available for Android 8.0 and above