About Sentinel by Elbah Group
If you’re evaluating uptime monitoring tools, you’ll quickly find dozens of products that all promise to tell you when your site goes down. The real differences show up in the detail: what’s actually included on a free plan, how monitoring types like SSL, DNS, domain expiry and heartbeat checks are gated behind paid tiers, and how pricing scales as you add monitors, users and alert channels.
This page is a starting point for comparing Sentinel, a free-tier-first monitoring platform from Elbah Group, against the established names in the space. Each comparison below is researched independently against the competitor’s own current pricing and documentation, and is kept honest about where Sentinel is and isn’t the better fit.
Sentinel vs Competitors
- Sentinel vs UptimeRobot — UptimeRobot’s free plan allows far more monitors (50 vs 3); Sentinel’s free plan covers more monitoring types (SSL, DNS, domain expiry, heartbeat) without per-type restrictions.
- Sentinel vs Better Stack — Better Stack pairs monitoring with full incident response and observability tooling; Sentinel stays lightweight and keeps every core monitor type on its free plan.
- Sentinel vs StatusCake — StatusCake’s free plan offers more raw uptime monitor slots; Sentinel’s free plan polls SSL and domain expiry checks faster and without StatusCake’s per-type caps.
- Sentinel vs Pingdom — Pingdom has no permanent free tier and focuses on synthetic and real-user performance monitoring; Sentinel offers a genuinely free entry point plus DNS and heartbeat monitoring Pingdom doesn’t confirm offering at all.
What Sentinel Free Includes
Every Sentinel comparison on this site starts from the same baseline: a free plan that includes uptime, SSL, DNS, domain expiry and heartbeat monitoring together, rather than gating monitoring types behind a paywall.
| Sentinel Free | |
|---|---|
| Price | £0/month |
| Monitors | 3 |
| Login users | 1 |
| Notification contacts | 1 |
| Minimum polling interval | 5 minutes |
| Historical data retention | 7 days |
| Uptime, SSL, DNS, domain expiry, heartbeat | All included |
| Incident management, maintenance windows, status pages | Not included (included on all paid plans) |
Sentinel’s paid plans — Individual (£12/month), Team (£30/month) and Agency (£65/month) — add more monitors, faster polling, more users and alert channels, and include incident management, maintenance windows and public status pages from the Individual tier upward. See the full pricing breakdown for details, or read any of the comparisons above for how Sentinel stacks up against a specific competitor.