Message privately without sharing your phone number. Swiss-built, open source, and designed to collect as little data as possible.
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How Threema handles your data, where it's stored, and what certifications back their claims.
Switzerland (HQ: Pfäffikon SZ, Switzerland) / Comitis Capital GmbH (since January 2026, previously Afinum Management)
Threema is fully GDPR-compliant and operates under Swiss data protection law, which is recognized as equivalent by the EU. All data is processed on servers in Switzerland. The app collects as little data as possible by design, and messages are deleted from servers after delivery.