Threema

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

Threema is ranked #2 of 40 in encrypted messaging apps on Inferse. 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.

Compared on encrypted messaging apps

Free plan: Nothreema.com
Encryption coverage: defaultthreema.com
Linked device limit: 2 devicesthreema.com
Desktop app: Yesthreema.com
Voice and video calls: Yesthreema.com
Disappearing messages: Yesthreema.com
Encrypted backups: end_to_endthreema.com

Facts

Messaging: Threema supports text and voice messages, voice and video calls, group calls, media sharing, file transfers and desktop use.threema.com · 1 Oct 2026
Privacy: Threema can be used without providing a phone number or email address, and contact synchronization is optional.threema.com · 1 Oct 2026
Encryption: Threema provides end-to-end encryption for messages, media, calls, profile pictures, group names and group-member lists.threema.com · 1 Oct 2026
Security audits: Threema says its apps undergo regular audits by recognized security experts, including Cure53 audits in 2020 and 2024.threema.com · 1 Oct 2026
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.threema.com · 1 Oct 2026
Infrastructure: Threema operates its own servers in data centers of an ISO 27001-certified colocation partner in Zurich, Switzerland.threema.com · 1 Oct 2026
Open source: The Threema apps are open source, with source repositories for Android, iOS, macOS, Windows, Linux and Threema Web.threema.com · 1 Oct 2026
Desktop requirement: The regular desktop app and web client require a mobile device with Threema installed and activated.threema.com · 1 Oct 2026
Integrations: Threema Gateway lets companies integrate Threema into existing software to send, receive and process messages.threema.com · 1 Oct 2026
Business APIs: Threema Work provides Work API, Broadcast API and an Entra ID connector for directory synchronization, administration and user management.threema.com · 1 Oct 2026
Broadcast: Threema Broadcast provides feeds, distribution lists, bots and centrally managed group chats, and is included in the Professional plan.threema.com · 1 Oct 2026
Self-hosting limit: Threema OnPrem users can communicate only with users of the same OnPrem instance.threema.com · 1 Oct 2026
Support: Threema provides support forms for the private app and management-cockpit support for Threema Work, plus dedicated Gateway and Broadcast support addresses.threema.com · 1 Oct 2026