Choose Uptime Kuma for broad check types and notification integrations. Choose Warden when your priority is explaining slowdowns, controlling noisy alerts or giving clients scoped access. Both run on your infrastructure; neither choice removes the need to monitor the monitoring host.
This comparison references Warden v0.9.0 and Uptime Kuma 2.5.5, reviewed on October 7, 2026. Project Helena builds Warden.
Compare the operational differences
| Need | Warden | Uptime Kuma |
|---|---|---|
| Checks | HTTP(S), TCP, DNS, ping, Docker | Broad protocol support, including keyword, JSON query and push checks |
| Minimum check interval | 10 seconds | 20 seconds |
| Latency baseline | Learned P50/P95 per monitor; explicit thresholds take precedence | No equivalent learned baseline in this comparison |
| Alerts | Confirmation, sustained windows, reminders, flapping and correlation controls | Retry controls and a broader integration ecosystem |
| Notification channels | Email, Slack, Discord, Telegram, JSON webhook | 90+ integrations |
| Team access | Admin, editor, viewer and status-viewer roles | No built-in per-client scoped accounts |
| Status pages | Group pages; a status viewer can be restricted to one page | Multiple status pages and custom-domain mapping |
| Database | SQLite or PostgreSQL | SQLite or MariaDB options in v2 |
| AI assistant interface | Permission-scoped MCP | No native equivalent covered here |
| Hosted option from Project Helena | One managed Warden instance for $49/month | Not offered by Project Helena |
Kuma features come from its versioned README; database options are visible in its v2 database implementation. Check the current release before choosing: old comparisons that describe Kuma as SQLite-only are outdated.
What happens when an endpoint slows down?
An HTTP 200 response can still be too slow. Warden learns a separate baseline for each monitor from successful checks. With default settings, the adaptive threshold is the larger of P95 × 1.5 and P95 + 100 ms. An explicit per-monitor threshold overrides learning.
That does not mean a new installation has an immediate baseline. The default is 200 successful checks, followed by the next hourly calculation. Until then the global fixed threshold applies. See adaptive latency for the learning window and configuration.
A slow check and an alert are also different events. Confirmation and a sustained-outage window determine when Warden interrupts you. History remains useful even when a short problem does not generate a notification. These controls are the main reason to evaluate Warden; a faster polling interval alone is not a reliability strategy.
Client access is different from a public status page
If you only need a separate public page for each client, Kuma may already meet the requirement. Do not migrate just to change the logo.
If each client needs an individual login restricted to their own page, Warden has a status_viewer role. Test that account in a separate browser and verify both what it can see and what it cannot change. This is scoped status access, not a claim that every dashboard role is a separate tenant. See the client-access comparison.
Try both on one disposable endpoint
Keep your existing monitor running during evaluation. Install Warden, add the same test endpoint, then compare:
- A healthy response and its measured latency.
- A brief failure shorter than your notification window.
- A sustained failure followed by recovery.
- A successful but deliberately slow response.
- Whether the actual alert destination receives the expected message.
Record the check interval, threshold and notification policy beside the results. Different defaults otherwise make the comparison misleading. This is a suggested evaluation, not a published benchmark or a customer result.
Where Warden does not fit
Warden checks from the host where it runs. It does not provide a global probe network, browser journeys, application traces or automatic SLA-compliance reports. It also has fewer notification integrations than Kuma. Its channels are global: adding client logins does not create per-client alert routing.
Choose the tool that covers your required protocols, destinations and access model. If Warden fits, set up your first monitor and verify an alert. If you prefer hosting, managed Warden costs $49/month, with no setup fee.