Signal vs Threema
A side-by-side look at 2 directory tools for 2026 — the verdict, pricing, ratings, features, and what readers think.
Head to head
| Signal | Threema | |
|---|---|---|
| Platforms | — | Web · iOS · Android · Windows · macOS · Linux |
Features compared
| Signal | Threema | |
|---|---|---|
| Plans & pricing | ||
| Free tier | — | ✗ No |
| Free trial | — | ✗ No |
| Pricing model | — | One-time purchase / per seat (Work) |
| Platforms & access | ||
| Web app | — | ✓ Yes |
| Mobile apps | — | ✓ Yes |
| Desktop app | — | ✓ Yes |
| Self-hosted option | — | ✓ Yes |
| Integrations & extensibility | ||
| Public API | — | ✗ No |
| Security & compliance | ||
| SSO / SAML | — | ✗ No |
| Two-factor auth | — | ✗ No |
| GDPR compliant | — | ✓ Yes |
| Encryption at rest | — | ✓ Yes |
| Collaboration | ||
| Team workspaces | — | ✓ Yes |
| Role-based permissions | — | ✓ Yes |
| Support | ||
| Email support | — | ✓ Yes |
| Knowledge base | — | ✓ Yes |