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Signal vs Threema: Which Secures Business Communication?

Discover how US-based Signal and Swiss Threema compare in safeguarding your business chats. Uncover essential differences today.

Last updated: February 1, 2026•Reviewed by Built in EU Team

Should You Switch to Threema?

What You Gain

Gain GDPR compliance and enhanced privacy protections.

Privacy advantage
Trade-offs

Signal has more features; some capabilities may be missed.

Signal has more features
Bottom Line

Switch if privacy is your priority; stay with Signal for features.

At a Glance

Data Location
🇺🇸US

US data laws

🇨🇭CH

GDPR protected

Pricing

Signal

Contact

Threema

freemium

Migration
Medium difficulty~1-2 hours

Privacy & Compliance Comparison

Critical data sovereignty factors at a glance

CriteriaSignalThreema
Server Location
USCH
GDPR Compliance
UnknownFull
Open Source
E2E Encryption
Data Portability
LimitedUnknown

CLOUD Act Notice

Signal is a US company and must comply with CLOUD Act data requests, even for data stored in EU data centers. Threema is not subject to US jurisdiction.

Switching from
Signal logo

Signal

🇺🇸

Signal

VS
Switching to
Threema logo

Threema

🇨🇭

Threema

US Data Storage

Data subject to US CLOUD Act and may be accessed by US authorities

EU Data Protection

Data protected under GDPR with EU-only data residency

Certifications & Compliance

No certifications listed

GDPR Compliant
EU-Based
ISO 27001
Open Source
Self-Hostable
Swiss hosted

Reasons to Switch

  • âś“Threema stores data on Swiss servers, enhancing privacy protection.
  • âś“Anonymous registration on Threema avoids phone number linkage.
  • âś“Threema complies fully with GDPR, ensuring strict data handling.
  • âś“Group chats on Threema can include up to 256 participants.

Things to Consider

  • !Threema is not open source, limiting transparency in security.
  • !Migrating contacts and chat history from Signal may be complex.
  • !Threema has a learning curve for users familiar with Signal's UI.
Migration difficulty:
Medium
~1-2 hours

Migration Overview

Full guide
Difficulty
Medium
Time Estimate
~1-2 hours

Depends on data size and complexity

Quick Steps

1

Create Threema account and configure settings

2

Export and prepare data from Signal

3

Import data, test integrations, and migrate users

Note: Threema offers strong privacy features and does not require a phone number for registration, which aligns well with Signal's privacy focus.

Other alternatives to Signal

Ready to make the switch?

Start using Threema today and take control of your data privacy.