Threema

7.2easy start · #8 of 43
in Encrypted Messaging Apps

Free to practise onnot on record
Free trialyes
Well documentedyes
Runs where you workyes

Runs on Android, api, iOS, Linux, Mac, self-hosted, Web, Windows. Paid plans from $3/mo.

Threema is ranked #8 of 43 in encrypted messaging apps on The Geeks Club. It runs on Android, API, iOS, Linux, macOS, Self-hosted, Web, Windows. There is no free plan. A free trial is offered. Paid plans start at $3/mo.

Threema plans and pricing

All plans

Core $3/mo Annual payment maximum 200 users · central user management · GDPR-compliant threema.com · 1 Oct 2026

Professional $5/mo Annual payment unlimited employees · Threema Broadcast · automation and API access · premium support threema.com · 1 Oct 2026

Private $6 once private use only · price depends on app store and country threema.com · 1 Oct 2026

OnPrem Not published self-hosted · full infrastructure and data control · white-labeling · premium support threema.com · 1 Oct 2026

Compared on encrypted messaging apps

Free plan: No
Encryption coverage: default
Linked device limit: 2 devices
Desktop app: Yes
Voice and video calls: Yes
Disappearing messages: Yes
Encrypted backups: end_to_end

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The record

Messaging: Threema supports text and voice messages, voice and video calls, group calls, media sharing, file transfers and desktop use.
Privacy: Threema can be used without providing a phone number or email address, and contact synchronization is optional.
Encryption: Threema provides end-to-end encryption for messages, media, calls, profile pictures, group names and group-member lists.
Security audits: Threema says its apps undergo regular audits by recognized security experts, including Cure53 audits in 2020 and 2024.
Compliance: Threema states that it is GDPR-compliant, subject to Switzerland’s Federal Act on Data Protection, and not subject to the US CLOUD Act.
Infrastructure: Threema operates its own servers in data centers of an ISO 27001-certified colocation partner in Zurich, Switzerland.
Open source: The Threema apps are open source, with source repositories for Android, iOS, macOS, Windows, Linux and Threema Web.
Desktop requirement: The regular desktop app and web client require a mobile device with Threema installed and activated.
Integrations: Threema Gateway lets companies integrate Threema into existing software to send, receive and process messages.
Business APIs: Threema Work provides Work API, Broadcast API and an Entra ID connector for directory synchronization, administration and user management.
Broadcast: Threema Broadcast provides feeds, distribution lists, bots and centrally managed group chats, and is included in the Professional plan.
Self-hosting limit: Threema OnPrem users can communicate only with users of the same OnPrem instance.
Support: Threema provides support forms for the private app and management-cockpit support for Threema Work, plus dedicated Gateway and Broadcast support addresses.
Founded: 2012
Price from: $3/mo

Where it ranks on The Geeks Club

Best Encrypted Messaging Apps in 2026#8 of 43
Best Secure Messaging Apps in 2026#8 of 36
Best Secure Team Chat Software in 2026#11 of 32

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Sources

threema.com/en/faq/features· checked 1 Oct 2026
threema.com/en/faq/special-because· checked 1 Oct 2026
threema.com/en/why-threema/security· checked 1 Oct 2026
threema.com/en/why-threema/open-source· checked 1 Oct 2026
threema.com/en/support/work· checked 1 Oct 2026
threema.com/en/faq/gateway· checked 1 Oct 2026
threema.com/en/contact· checked 1 Oct 2026
threema.com· checked 28 Sept 2026
threema.com/en/pricing· checked 1 Oct 2026