Threema Work

The Messenger for
Secure Communication in the Healthcare Sector

For GDPR-compliant team communication and secure exchange of health data in hospitals, medical practices, clinics, pharmacies, and in home care.

Activate free trial

Areas of Application

Hospital, medical practice, clinic



Care and consultation

IT Security in Healthcare
Optimal Protection of Patient Data

Besides security, time is another critical factor in everyday medical work. Physicians and other medical staff must be able to quickly and securely pass patient data to a colleague or a different department. Threema Work is perfectly suited for fast, reliable, and secure exchange of information.

Threema Work App

Rock-Solid Security

In Threema Work, all types of communication – including status messages, group chats, and audio/video calls – are always end-to-end encrypted, and all messages are immediately and irrevocably deleted from the server once they are delivered to the intended recipient.

Full Legal Compliance

US messengers like WhatsApp are subject to the controversial CLOUD Act, and conventional chat apps use third-party cloud/hosting services based in the US, e.g., Amazon AWS. Threema, on the other hand, is subject to Swiss data-protection laws. The company runs its own servers in a high-security data center of an ISO 27001-certified collocation partner in Zurich. Unlike apps such as WhatsApp, Threema Work is 100% GDPR-compliant.

Intuitive Operation, Powerful Administration Features, and Effortless Distribution

In terms of usability, Threema Work is comparable to common chat apps like WhatsApp, Signal, and Telegram. Users feel at home in the app right away.

Thanks to the advanced administration options in the management cockpit, administrators are able to pre-configure the Threema Work app according to company requirements, restrict features, and revoke access to the app in case of staff departures.

Activate free trial
Pietro Paganini, MD
Pietro Paganini, MD
Hi Carla, here’s the x-ray in question. Please note the highlighted area.
Pietro Paganini, MD
Pietro Paganini, MD
Carla Schulz, MD
Carla Schulz, MD
Thanks, Pietro! Looks like a shadow at first glance, but I’ll take a closer look later…
Pietro Paganini, MD
Pietro Paganini, MD
Great, thanks!

Extensive Feature Set for Efficient Team Communication

Threema Work equips medical professionals with everything they need to communicate in a straightforward and efficient manner with colleagues and patients. On top of that, the app includes additional features that make everyday work easier.

Single and group chats

Single and group chats

Audio and video calls

Audio and video calls

Polls and off-hours policy

Polls and off-hours policy

Transfer of files of any type

Transfer of files of any type

More about the features

Patient data is inherently personal, and it often contains highly sensitive information, which is why it’s particularly worthy of protection. When exchanging patient data, maximum security and strict compliance with data-protection regulations are vital.

The WhatsApp Alternative
Perfectly Suited for Medical Communication

Threema Work is based on the tried and trusted Threema app that’s used by millions of home users around the world. It was built from the ground up with security and total data protection in mind. Thanks to its versatility and the powerful administration features, Threema Work is the ideal messenger for straightforward and privacy-compliant communication in the healthcare sector.

  • Efficient communication with and among the medical staff
  • Fast and secure exchange of medical findings
  • Remote diagnostics by means of image exchange or end-to-end encrypted video calls
  • Short-term employee scheduling, e.g., in case of a sick leave
  • Excellent availability
  • Clear separation between personal and professional communication

There are two price plans available. To find out which one fits your medical facility’s needs, please consult the price-plan comparison.


Instant messaging is an immediate and effortless means for information exchange, and it has become an integral part of today’s business communication. Instant messaging simplifies communication, improves collaboration, expedites workflows, and increases productivity. It is the most popular communication tool.

Risks of conventional chat solutions

Many of the apps that are used for business purposes don’t meet legal data-privacy requirements. Often used under the radar as “shadow IT,” messengers like WhatsApp pose several risks:

  • Unrestricted access to user data (such as contacts, metadata, locations, etc.) must be granted
  • Third parties can gain access to this data
  • The encryption used in them is not verifiable
  • There is no means for administration and user management
  • Legal requirements are not met
  • There is no strict separation between personal and professional communication

To find out how Threema differs from WhatsApp in terms of security and data protection, please refer to this in-depth comparison.

In November 2021, the FZI Research Center for Information Technology in Karlsruhe, Germany, released a comprehensive legal study on the corporate use of messaging services as well as a compact practical guide (both in German), see blog post.

Threema Work is available for Android and iOS and can also be used on tablets.

With the desktop app and the web client, Threema can also be used on desktop computers.

I am a user

With your own smartphone or tablet

  1. Wait until you receive an activation link or username and password from your administrator
  2. On your smartphone or tablet, download the app “Threema Work” free of charge from the app store
  3. Launch the app, and open the activation link or enter your username and password

With a company smartphone or tablet

You don’t need to make any preparations. Simply open the Threema Work app and follow the instructions.

I am an administrator

  1. Log in to, select a subscription, and add a new user (or a license for MDM systems, if you use one) in the menu item “User management”
  2. On your smartphone or tablet, download the app “Threema Work” free of charge from the app store
  3. Launch the app, and open the activation link or enter the username and password you have defined in step 1. When using an MDM system, this step is not necessary if you include the username and password in the Config Policy (see th_license_username)

Watch our product demo to learn how to deploy the Threema Work app to your users and to get an overview of the management cockpit.

Threema Work is ideal for secure and efficient communication in medical institutions such as doctors’ offices, clinics, pharmacies, and it’s also perfectly suited for home care. Our business messenger allows your medical facility’s staff to exchange medical reports in a secure, efficient, and privacy-compliant manner.

To learn more, visit the healthcare subsite.

A phone number is not required to use Threema Work. Threema Work can be used on devices without (or with multiple) SIM cards. You can even make Threema calls without a SIM card.

Threema Work licenses for professional use are available from CHF 12.95 per year. NGOs, schools, and other educational institutions benefit from preferential terms. Details about the price plans (Essential, Advanced, and Professional) can be found on this page.

To get acquainted with Threema Work, make sure to activate a free trial, and test Threema Work without restrictions and without any purchase obligation.