Threema is the world’s favorite secure messenger and keeps your data out of the hands of hackers, corporations and governments. Threema can be used completely anonymously, allows to make end-to-end encrypted voice 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.
PRIVACY AND ANONYMITY
Threema is designed to generate as little data on servers as possible – this is a core part of our concept. 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 meta data. Threema is fully compliant with the European privacy legislation (GDPR).
HIGHEST ENCRYPTION STRENGTH
Threema encrypts ALL your communications END-TO-END including messages, voice calls, group chats, media files and even status messages. You can rest assured that only the intended recipient can read your chats, and nobody else – not even us. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on user’s devices to prevent backdoor access or copies.
Threema is not only an encrypted and private messenger but also versatile and feature-rich.
• write text and send voice messages
• make voice calls (requires iPhone 5s / iOS 9 or above)
• share videos, pictures and locations
• send any type of file (pdf, animated gif, mp3, doc, zip, etc.)
• use Threema Web to chat from your Desktop
• create groups
• conduct polls with the unique 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)
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.
We let users confirm trusted contacts with a QR code or a key fingerprint to prevent man in the middle attacks.
We are a 100% independent and self-financed company in the heart of Switzerland with its own servers and in-house software development. Switzerland is a country with some of the most user friendly privacy laws in the world.
SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq
- Fixed a bug that could delay text input
Ratings and Reviews
Get this app
I’ve been using Threema for years
It is by far the most safe and secure messaging app out there
Once you pay for the original app, there are never any additional charges for any messages, pictures, videos, or texts sent... ever!!
I used to pay a lot of money to send even just one text message to family members in Europe.
I hear this app is very popular in Europe, but somehow I don’t think it will ever catch on in the United States.
But if you do purchase it, it is definitely worth it.
You will need to tell your friends and your family members about the app because they need to have the app as well in order to communicate with you.
Once anyone else has this app it’s the only way I communicate with them.
They begin to use it too and it becomes your normal way of sending messages back and forth.
Almost all of my text messages to people I know, go through Threema.
Get this app and spread the word.
Remember freedom means “No Big Brother!”
Fix the App!
I love threema. Five stars. After the most recent update, I can barely type. It locks up half of the time. This is utter nonsense! (iPhone 7 Plus 256GB) -- devs, please address! (Then I will happily rate this back to 5 stars)
The best messaging app in terms of end to end security. If you guys can enable video call feature as well, then no one can beat you for sure
- Threema GmbH
- 72.3 MB
- Social Networking
- Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
- English, Dutch, French, German, Italian, Portuguese, Rhaeto-Romance, Russian, Spanish
- Age Rating
- Rated 4+
- © 2012-2018 Threema GmbH
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With Family Sharing set up, up to six family members can use this app.