DNS Spy vs Hardenize
| DNS Spy | Hardenize | |
|---|---|---|
| Free plan | No | No |
| Free trial | Yes | No |
| Paid from | $9/mo | — |
| Open source | No | No |
| Platforms | api, Web | Web |
| Free plan | No | No |
| Resolution checks | Yes | Yes |
| Propagation checks | Yes | — |
| Record-change alerts | Yes | — |
| Nameserver health checks | Yes | Yes |
| Alert channels | email, Slack, Discord, PagerDuty, webhooks, syslog | — |
| Check interval | — | 1,440 minutes |
Both are listed in Best DNS Monitoring Software. On Everything Xiaomi, DNS Spy scores higher on our published basis.