Threema download

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.

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).

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.

For questions or problems please consult our FAQs:

Threema App Description & Overview

The applications Threema was published in the category Social Networking on 2012-12-28 and was developed by Threema GmbH. The file size is 72.93 MB. The current version is 4.2.2 and works well on 9.3 and high ios versions.

Fixed a bug in relation to Threema Safe

Threema App Tips, Tricks and Rules

Threema Reviews

Techie Critic

Love it  Techie Critic  5 star

Great app and just starting to use it more. The only missing feature is the time-based “self destruct” of messages after a time variable we set such as after x number of minutes, hours, days, or weeks after message is read.


Use everyday all day. I live by this app  Climax510  5 star

I would love to have a push to talk option. Love this app. Use it every single day. Love all the features. I don’t have 1 single complaint.


Best app in the entire App Store  PurpleMesa  5 star

No need to give your phone number out to anyone. THREEMA gives you an ID which you use instead of your phone number. No other secure messaging application allows you to protect your phone number in this way. Also, because you pay for THREEMA you know exactly why they’re doing what they’re doing. For money from you. You’re paying and this your data isn’t the price. I’ve been with THREEMA since the start and their developers come with constant improvements and updates. I love this app because it means freedom.


Great at security, mostly great at the rest  Kokubu  4 star

This looks like a messaging app written by people who take security seriously. Well done. I’m only taking off one star because the onboarding process was a mess. At one point, you’re asked to enter a password, and again to verify it. That’s all fine, but the password fields are so far down the page that the on-screen keyboard completely covers the second one — and the page doesn’t allow scrolling vertically! Eventually I discovered a workaround (tap Passwords, then Cancel, then tap the second password field, then blindly type your password on the keyboard that appears). But this is really something that should have been caught in testing. This makes it impossible (AFAICT) to paste a password from the clipboard, which discourages the use of strong passwords from a password manager. And that’s not good for security. Aside from that one major inconvenience, though, this looks like a great app.


New logo  EPlurnteaser  4 star

Only thing I’d change is the icon. If your using this app and don’t want people to realize it’s a messaging app it’s kind of hard. The picture logo is literally a message bubble with a lock in it, which is pretty suspicious. Other than that I think it’s great.


Excellent  bassemalsultan  5 star

We hope the support of arabic

Rob S123

Outstanding Communication Tool  Rob S123  5 star

I’ve used Threema fo almost 3 years. During this time, this app has exploded with features not seen on other messengers (see vendor’s description for the app). The technical support is impeccable; I’ve always received a clear and helpful response with a day. These people care about their customers. With no doubt, I’ve received outstanding value going with Threema. If you need a great communication tool, look no further.


An inconvenient communication app  程序员之家  1 star

Such an inconvenient communication app for voice-messages. It doesn’t support running in iOS-background, which means it can’t automatically download voice-messages or images you received. Every time you get a incoming-voice notification, you have to open this app and tap the voice-message you received and wait for a long while to download it. If you don’t live in Europe, I strongly suggest you not to using it, because downloading voices-messages from Threema’s sever takes really long time. Not even to mention that if you receive more than one voice-messages, you have to tap them each one by one to download, waiting and waiting for these downloading processes. Too annoying!! What an era do we live in? Almost every communication app is now having this feature downloading media automatically.

Zombie slayers

Get this app  Zombie slayers  5 star

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. Not anymore.. 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!  Jonnyappleskins  1 star

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)


Highly Recommended  danielbrown84  5 star

This is without a doubt best in class for security and data encryption. Highly endorsed. Great job


Perfect  bastian320  5 star

End to end encryption. Clean. Fast. Dark theme was the cherry on top. Keep it up.


Fantastic  CKMCK  5 star

A really great messaging app!!! It pains me to use other messaging apps now that I use Threema. Threema is definitely in a league of its own.


Good app  Stevenr0  5 star

Nice easy to use interface. I wish it used the Axolotl 2 protocol like TextSecure.


iPad support!  Immune_Jam  3 star

Needs to support iPad.


Usabilty average  Guvi-cb  2 star

There is still no high-res support for the latest ipad even after the most recent update. Disappointing. Until this is fixed it's unusable for me. Two stars.


Solid effort at encrypted communication  Dimtar  5 star

Excellent app so far with a little room for improvement.


Best messenger ever!  FK_flopps  5 star

So much better than WhatsApp! Very neat app, secure and super reliable! Perfect messenger!


Auper  Ment0w  5 star

Worthy alternative to others. Safe an easy to use


Awesome secure messaging  noahodonoghue  5 star

Secure messaging done properly. Exactly how I envisioned it working. Love the 3 star system and the QR codes.


Love  ashweekae  5 star

I love threema so much that I use it as my primary messaging app. Unfortunately, not everyone has it yet. A suggestion might be to implement an interface we can receive and respond to non threema text messages (similar to Facebook messenger's recent update where we can respond to text messages from within the app!) that way we would not have to continue to switch between apps for conversations but i understand that that might compromise the security of the corporation because that's what threema is known for. I'll forever recommend this app to everyone looking for a secure messaging portal and I continue to look forward to your updates


Message order out of order  UserNutzer  3 star

Recently in group messages with participants in different time zones the message order seems to be scrambled. The newest message doesn't show up last but somewhere up.


Great App  B_radHilton  4 star

I've been using Threema for about 5-months now. It definitely needs GIF support, but other than its an awesome way to send and receive encrypted messages free from prying eyes.


.  Ffvjvjbkbhg  3 star

It says it costs 2.99 US to download, but was charged 3.27UD. Why?

Gabbi L.

Good App  Gabbi L.  4 star

Would give it 5 stars if messages could be set to auto destruct


Best app there is  GreenWater1980  5 star

My most used app and the best app there is. No one does anything more than text all day long. Threema enables you to do this while at the same time feeling secure that others are not reading the messages. Based in Switzerland, with real end to end security, and with all the features of the other messengers. Threema is my most used and favorite app.

Amir ali11

Great app  Amir ali11  5 star

Great app

Asim Ehsan 055/3880738

Asim  Asim Ehsan 055/3880738  5 star

Please update app fir apple watch


Great App  P_Ram  5 star

Secured, solid, but please change your icon. It's so 2008


The Best  Vestibule,Review  5 star

Best encrypted program undisputed.










Threema Comments

Threema Social Networking Download