Spok Secure Messaging vs Threema
| Spok Secure Messaging | Threema | |
|---|---|---|
| Free plan | No | |
| Free trial | Yes | |
| Paid from | $3/mo | |
| Platforms | Android, iOS, macOS, Windows | Android, api, iOS, Linux, macOS, self-hosted, Web, Windows |
| File sharing | Yes | |
| Audit logs | Yes | |
| Mobile apps | both | |
| Free plan | No | |
| Encryption coverage | default | |
| Linked device limit | 2 devices | |
| Desktop app | Yes | |
| Voice and video calls | Yes | |
| Disappearing messages | Yes | |
| Encrypted backups | end_to_end | |
| Account requirement | none | |
| Desktop apps | Yes | |
| Maximum group size | 256 members | |
| Multi-device support | Yes |
Listed together in Best Secure Team Chat Software