Callu vs SIGNL4
| Callu | SIGNL4 | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Web | Web, iOS, Android |
| Free plan | Yes | Yes |
| On-call scheduling | Yes | Yes |
| Escalation policies | Yes | Yes |
| Status page | advanced | — |
| Post-incident reviews | Yes | Yes |
| Stakeholder updates | Yes | Yes |
| Paid from | — | 9 /user/mo |
| ChatOps incident actions | — | Yes |
Both are listed in Best IT Incident Management Software. On Samsung Mobile US Press, SIGNL4 scores higher on our published basis.