Threema is known for its dedication to privacy. It is – and always has been – possible to protect access to the app with a PIN. Now you can also protect individual chats from prying eyes. Simply mark a confidential conversation as Private Chat, and your PIN or fingerprint will be required to access it. Private Chats can also be hidden from the chat list. This way, full confidentiality can be maintained, say, while you're showing someone Threema’s (other) cool features. In line with this, push notifications for Private Chats don't include message contents. Learn more

With Threema 2.8.1 for Android, you can add captions to images, files, and GIFs. The provided text will appear as overlay at the bottom of the preview. When sending multiple images at once, each image can be labelled individually. This is a neat way to add a comment to your images, files, and GIFs.

The 2.81 update also includes some performance improvements and bug fixes.

The wait is over, Threema 1.6.0 for Windows Phone is now available. This update introduces a new gallery for easier media management, message and media forwarding to other contacts and groups, and the option to save media files directly to OneDrive. On top of that, the update includes general improvements and numerous bugs fixes increasing stability and performance of the app.

For all the details, please visit the change log.

Threema 2.7.2 for iOS is now available. This update supports text formatting. You can now spice up your messages by writing words in bold, italic, and strikethrough type. To do this, simply enclose a word or a sentence in the appropriate character: * bold *, _ italic _, and ~ strikethrough ~.

Additionally, the update contains performance improvements and fixes some bugs.

We are looking for the best arguments against mass surveillance. Lay out your argument and, with a bit of luck, win one of five copies of the book “1984”, George Orwell’s prophetic vision of a surveillance state.

Enter the contest here.

The best arguments will be published anonymously.

With this contest, we aim to raise awareness of the negative effects and the futility of so-called “preventive surveillance”, and we want to make a contribution to the ongoing debate about the BÜPF referendum.

Threema Work is the instant messenger for organizations that care about data privacy and security but don't want to compromise on comfort and reliability.

Instant messaging is becoming increasingly important in business communication. Not only do co-workers frequently communicate using instant messengers; it's common that instant messengers are used for communicating with business partners and clients, too. The messengers that are employed might (or might not) be suitable for private purposes, but most often they don't comply with legal data-protection requirements and hence don't meet professional standards. Corporate solutions are rarely implemented because they are too expensive or not straightforward enough or hard to use. With Threema Work, Threema makes its famous security, ease of use, and metadata restraint available to organizations. This way, what is confidential stays confidential, and personal and professional communication is separated.

Strict separation of personal and professional communication

With regard to smartphones, many organizations have adopted their mobile strategy to Bring Your Own Device (BYOD), allowing staff to use their own phones for work matters. The separation of personal and professional communication poses a challenge to this practice. A straightforward solution is to use a designated channel (i.e., app) for professional communication. As a stand-alone app, Threema Work can provide a strict separation of personal and professional communication, and it offers the top-grade security, hallmark metadata-restraint, and intuitive user experience the Threema app is famous for, along with handy features and useful services.

Effortless distribution and integration into existing MDM/EMM systems

The open distribution model allows effortless cross-platform distribution of the Threema Work app to Android and iOS devices. You simply unlock any number of users and distribute the credentials to the intended users, without having to be concerned about which operating system a user's device runs on. Therefore, the open distribution model is also suited for organizations that don't have an MDM/EMM system in place. All the same, Threema Work can be easily integrated into existing MDM/EMM systems, allowing for automated remote configuration of the app. This provides full control over how Threema Work is set up on the users' devices and relieves users from setting up the app manually.

Why Threema Work?

Threema Work is a comprehensive and inexpensive solution for organizations to make mobile communication secure and compliant with data-privacy standards. These are the benefits:

• Threema Work provides a strict separation of personal and professional communication.
• Threema Work offers the top-grade security, hallmark metadata-restraint, and intuitive user experience the Threema app is famous for.
• Thanks to the open distribution model, the Threema Work app can be easily distributed to the intended users.
• Purchased logins can be passed on (e.g., if staff or device changes occur).
• Threema Work can be integrated into existing MDM/EMM systems, but it can as well be used without one.
• Threema Work users benefit from premium support services, SLA plans, app customization (e.g., your logo in the app), and annual Threema Gateway credits.
• Threema Work's different service packages have any organization's needs covered.
• Threema Work is a European product which is created and maintained in Switzerland.

The scope of services depends on the choice of the service package.

For a limited time we’re offering a special introductory price on Threema Work Business packages.

To learn more, please visit https://work.threema.ch/.

Threema 2.8 for Android is now available. Among other improvements, this update introduces support for text formatting. You can now spice up your messages by writing words in bold, italic, and strikethrough type. To do this, simply enclose a word or a sentence in the appropriate character: * bold *, _ italic _, and ~ strikethrough ~. Support for this feature on iOS and Windows Phone is in the works.

The 2.8 update also includes various bug fixes and performance improvements. For all the details, please consult the change log.

Since WhatsApp started offering end-to-end encryption of message contents, we are often asked whether there are still advantages of using Threema. There’s a lot to highlight, which is why we have compiled a list of privacy-related features that set Threema and WhatsApp apart.

The sole encryption of message contents is insufficient as long as lots of metadata can still be collected because, as Stewart Baker (former NSA General Counsel) puts it:

“Metadata absolutely tells you everything about somebody’s life. If you have enough metadata, you don’t really need content.”

For this reason, Threema was designed from the ground up to generate as little metadata as technically possible. This is one of the key differences between Threema and other messengers.

Learn more about the advantages of using Threema here.

The new Threema version for iOS offers a share extension. This allows you to share images, videos and any other file from within other apps via Threema.

Additionally, the update fixes some bugs and brings general VoiceOver improvements.

Now also available on Android!

Threema for Android now displays animated GIFs directly in chat bubbles, both in group chats as well as in regular chats.

Furthermore, voice message playback was improved. We also added a new feature that allows you to simply clone existing groups and made it easier to manually add new contacts.

For further details about the changes in this release please consult the change log.

Spice up your chats!

Threema for iOS version 2.6.2 now displays animated GIFs directly in Threema’s chat bubbles, both in group chats as well as in regular chats.

We also improved the built-in video processing and were able to raise the maximum length of video messages to 15 minutes for moderate quality and 3 minutes for high quality videos.

In addition, the media browser was upgraded to give easy access to any media type including files.

For further details, please consult the change log.

With the latest update, Threema’s Windows Phone version gets some new features, the most important being the agree/disagree functionality: It allows to agree or disagree with an incoming message without triggering a push notification on the chat partner’s device. Instead, a “thumbs up” or “thumbs down” icon appears next to the corresponding message. This feature is now available on all platforms.

Media files (i.e., videos, pictures and voice messages) can use up a considerable amount of disk space. For this reason, the media management has been enhanced, allowing you to delete media files globally or on a per-chat basis, which makes freeing up disk space a snap.

If some of your group chats are reaching the limit of members, we have good news for you: The maximum group size was raised to 50.

Those are three of the functional improvements of the update 1.5.0, but there are visual enhancements, too. The chat wallpaper is now customizable, the default being our illustrative all-over pattern, and you can adjust the color of speech bubbles to your liking.

For further details, please consult the change log.

With its latest Android update, Threema introduced a new agree/disagree feature. This handy feature is now also available on iOS. It enables you to agree or disagree with an incoming message without triggering a push notification on the chat partner’s device. Instead, a “thumbs up” or “thumbs down” icon appears next to the corresponding message. This unique feature is not offered by any other messenger, which shows that – besides security – innovation is a driving force behind Threema’s development. The feature will be available on Windows Phone soon.

With its 2.6.0 update, the iOS version catches up with the Android version. Like on Android (and Windows Phone), there is now a dark theme available which looks sleek and elegant. Add to that the new chat wallpaper, which is another visual enhancement.

Furthermore, the maximum group size was raised to 50, VoiceOver support was improved to make Threema easier to use for the visually impaired, and thanks to the streamlined setup process, initially setting up Threema is now more intuitive and pleasant.

For all the details, read the change log.

Due to frequent news about surveillance by governments, data breaches by companies and attacks by hackers, concerns about data privacy have been growing over the past years. The Data Privacy Day, which takes place on January 28 every year, aims to raise public awareness on the subject.

Data is power. Personal data that has been collected can be preserved indefinitely, it can be endlessly reproduced, and it might eventually fall into the wrong hands. Therefore, the best protection against data abuse is to prevent the generation of data in the first place. There are many services that protect user data, but Internet users need to care about their data in order to take the right measures.

Together with Tresorit and ProtonMail, Threema would like to help to raise awareness about data privacy. In view of the occasion, Tresorit has created a website that shows what user data is being collected by large online companies. The point is to remind us that our data has a high value for the companies we give it to, which might lead us to rethink our behavior. On Tresorit's Blog, the CEOs of the three companies also share some tips on how to protect one's online privacy.

Speaking of privacy: Have you ever read Threema's privacy policy? It's not only transparent and comprehensible, it literally fits on a sheet of paper.

New agree/disagree feature, individual notification settings per chat, up to 50 members in group chats – those are just some of the additions Threema’s 2.6 update for Android provides.

New agree/disagree feature

Threema’s acknowledge feature enjoys great popularity. It allows to confirm an incoming message without triggering a push notification on the chat partner’s device, providing an unobtrusive way of stating that you have taken note of – and agree with – a message. There are times, however, when you have to (silently) disagree. With Threema 2.6 for Android, you can do that:

• In a single chat, tap and hold on a received message.
• In the header, “thumbs up” and “thumbs down” icons appear.
• To agree or disagree with the selected message, tap “thumbs up” or “thumbs down”, respectively.

This feature is currently only available in single chats on Android, but Threema versions for other platforms will follow.

Individual notification settings per chat

This might sound familiar: When disruption is most inconvenient, a lively discussion (on a topic you couldn't care less about) arises in some group chat, forcing you to take extreme measures like turning off your phone. With Threema 2.6 for Android, notification settings can be adjusted on a per-chat basis, allowing you to mute that one group chat specifically. You can choose to mute it indefinitely or only for a set amount of time.

Notification sounds can also be adjusted for each chat individually, enabling you to tell who has sent an incoming message before you pick up the phone.

Maximum group size raised to 50 and other improvements

Additions and changes in Threema 2.6 for Android include:

• 170 new emojis added
• Completely redesigned setup process
• Raised max. group size to 50
• New PIN lock screen with support for fingerprint reader and other system lock screen facilities (Android 6.0+)
• Status messages for incoming or changed poll votes
• Performance improvements
• Two obsolete permissions removed
• New agree/disagree feature
• Individual notification settings for each chat

For further details, read the full change log.

Threema just launched its own news channel. If you wish to stay updated about Threema-related topics, you can add the Threema Channel to your contacts and receive interesting news directly within the Threema app.

Available News Feeds

Don't worry, though; the Threema Channel is unobtrusive. The Threema Channel features several feeds for different topics. You decide which feeds you want to subscribe to, and you can cancel subscriptions at any time, of course.

• News: All news concerning Threema
• Android: Changelog and Android related news
• iOS: Changelog and iOS related news
• Windows Phone: Changelog and Windows Phone related news
• Special: We're giving away some Threema licenses and Threema T-shirts

Add the Threema Channel

To get the Threema Channel on your phone, simply add the ID *THREEMA to your Threema contact list, either manually or by scanning its QR code. Then, send the text «info» to this ID to get a list of available feeds and subscribe to the ones you like.

Launch giveaway

We're giving away some Threema licenses (each of 50 lucky winners will receive two licenses for our Android app) and five original Threema T-shirts to celebrate the launch of the Threema Channel. By subscribing to the feed “Special” you will automatically participate. The promotion will end December 31.