Siskin IM vs Threema
| Siskin IM | Threema | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | Yes | |
| Paid from | Free | $3/mo |
| Platforms | iOS, macOS | Android, api, iOS, Linux, macOS, self-hosted, Web, Windows |
| Free plan | Yes | No |
| Encryption coverage | mixed | default |
| Desktop app | Yes | Yes |
| Voice and video calls | Yes | Yes |
| Linked device limit | 2 devices | |
| 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 Encrypted Messaging Apps