Signal vs Threema
| Signal | Threema | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | Yes |
| Paid from | Free | $3/mo |
| Platforms | Android, iOS, Linux, macOS, Windows | Android, api, iOS, Linux, macOS, self-hosted, Web, Windows |
| Free plan | Yes | No |
| Disappearing messages | Yes | Yes |
| Paid from | 1.99 /mo | |
| Encryption coverage | default | default |
| Maximum group size | 1,000 members | 256 members |
| Linked device limit | 5 devices | 2 devices |
| Desktop app | Yes | Yes |
| Voice and video calls | Yes | Yes |
| Encrypted backups | end_to_end | Yes |
| Account requirement | none | |
| Desktop apps | Yes | |
| Multi-device support | Yes |
Listed together in Best Secure Messaging Apps