The quick answer
Better Stack is a polished product with a strong brand and excellent UI. Sentro is cheaper at every tier, covers the same monitoring types, and adds notification channels (Telegram, PagerDuty, OpsGenie) that Better Stack gates behind higher plans or doesn't offer at all. If budget matters, Sentro wins on value at every price point.
Pricing side by side
| Feature | Sentro | Better Stack |
|---|---|---|
| Free monitors | 5 | 10 |
| Paid entry price | $4/mo | $24/mo |
| 50 monitors | $9/mo (Pro) | $24/mo |
| 10-second intervals | $19/mo (Max) | Enterprise |
| Custom domain status pages | $19/mo (Max) | $24/mo |
| PagerDuty integration | $19/mo (Max) | $24/mo+ |
| Annual discount | 2 months free | 20% |
| Self-hosted option | From $0 (Community) | Not available |
Monitor types
Both tools cover HTTP, keyword, SSL, TCP, ping, DNS, and heartbeat monitoring. Better Stack adds multi-step browser checks (Playwright-based) at higher tiers. Sentro adds domain expiry monitoring and degraded state detection (a three-state model: UP / DEGRADED / DOWN) that Better Stack doesn't offer.
Alert channels
This is where the gap is significant. Better Stack focuses on Email, Slack, and its own app for notifications. Sentro's Pro plan ($9/mo) includes Teams, Telegram, Google Chat, and Mattermost — channels that Better Stack either doesn't support natively or gates behind custom pricing.
| Channel | Sentro | Better Stack |
|---|---|---|
| All plans | All plans | |
| Slack | All plans | All plans |
| Discord | Starter ($4/mo) | Not available |
| Microsoft Teams | Pro ($9/mo) | $24/mo+ |
| Telegram | Pro ($9/mo) | Not available |
| Google Chat | Pro ($9/mo) | Not available |
| PagerDuty | Max ($19/mo) | $24/mo+ |
| OpsGenie | Max ($19/mo) | Not available |
Status pages
Better Stack has polished, visually attractive status pages. Sentro matches on functionality: 90-day uptime history, active incidents, maintenance windows, subscriber email notifications, and custom domains on paid plans. Sentro's Max plan ($19/mo) adds complete white-labeling (remove "Powered by Sentro").
Escalation policies
Better Stack has on-call scheduling built in — a full on-call rotation manager with shifts, overrides, and calendar sync. Sentro's escalation policies are simpler: ordered notification steps with time delays. If you need a full on-call scheduling system, Better Stack has an edge here. If you need a fast "page the next person if no one responds in 15 minutes" setup, Sentro's policy system covers it.
Who should use which
Choose Sentro if: you want maximum coverage at the lowest price, need Telegram/Discord/Mattermost channels, want a self-hosted option, or are a small team where the $24/mo Better Stack entry price doesn't make sense.
Choose Better Stack if: you need full on-call rotation scheduling, Playwright browser checks, or a more polished enterprise-facing UI is important to your team.
Bottom line
At $4/mo vs $24/mo for equivalent features, Sentro is the obvious choice for cost-conscious teams. The monitoring coverage is the same, the notification channels are wider, and you get a self-hosted option if you ever need to move off cloud.
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5 monitors, 5-minute intervals, email + Slack alerts. No credit card required.