Keep the dead-man's-switch simplicity — add real uptime, SSL, DNS, and status pages in the same tool.
FourSight is a Healthchecks.io alternative for teams that need active monitoring too: Healthchecks.io only listens for pings (and its free 20-check tier is genuinely generous), while FourSight combines heartbeat/cron monitors with multi-region uptime, SSL, DNS, and hosted status pages — one tool from $16–40/mo instead of two.
Why switch?
Healthchecks.io is one of the most respected tools in the cron-monitoring niche: a dead-simple ping-URL model, a free tier with 20 checks that covers most personal and small-team needs, open-source code you can self-host, and an unusually broad set of notification integrations (Slack, Matrix, ntfy, Signal, and dozens more). Paid plans start at $20/mo for 100 checks (as published July 2026 — verify with the vendor).
Its design philosophy is also its boundary: Healthchecks.io is deliberately passive. It waits for your systems to ping it. It cannot probe a URL, check an SSL certificate's expiry, watch a DNS record for drift, or host a customer-facing status page. Every team we've seen run it in production pairs it with a second, active monitoring tool.
FourSight covers both halves in one product: heartbeat monitors (the same ping-URL pattern, with 5-field cron expressions and grace periods) plus active multi-region monitoring — HTTP, SSL, DNS, domain expiry, keyword, ping, and port checks validated by 4-region quorum consensus — feeding one incident pipeline with escalation policies and hosted status pages. (Tier-by-tier math is on the Healthchecks.io pricing comparison.)
The honest concessions: Healthchecks.io's free tier beats anything FourSight offers for pure cron work, its open-source self-hosting option matters for some compliance postures, and its integration list is longer. The FourSight case is consolidation, not beating Healthchecks.io at its own specialty.
Advantages
Healthchecks.io only listens for pings. FourSight combines heartbeat monitors (passive) with HTTP, SSL, DNS, domain, keyword, ping, and port checks (active, 4-region quorum) in one monitor list.
Healthchecks.io has no public status pages. Every FourSight plan includes at least one hosted status page, up to 25 white-label pages on Scale.
FourSight opens structured incidents with severity levels and event timelines, and escalates through your team on Growth+ — beyond simple per-check notifications.
Instead of Healthchecks.io plus a separate uptime product, FourSight Growth ($40/mo) covers heartbeats, 100 uptime monitors, all 8 check types, and 5 status pages.
Pricing
Healthchecks.io wins the free-tier comparison outright — the math changes when you price the full monitoring surface.
| Scenario | FourSight | Healthchecks.io |
|---|---|---|
| Cron monitoring only, up to 20 checks | No free heartbeats — Growth ($40/mo) is where they unlock. For this scenario, Healthchecks.io is simply the better deal. | Free — 20 checks, generous limits, open-source. The category's best free heartbeat tier. |
| Cron + uptime + SSL + a status page | Growth — $40/mo total: heartbeats, 100 multi-region uptime monitors, SSL/DNS/domain checks, 5 status pages, escalations. | Healthchecks.io Business ($20/mo, 100 checks) + a separate uptime/status-page tool ($15–30/mo) = ~$35–50/mo across two systems. |
| Uptime now, cron later | Free (10 monitors) or Starter ($16/mo, 50 monitors) today; add heartbeats by upgrading to Growth when needed. | Healthchecks.io can't cover the uptime half at any price — it's passive by design. |
Healthchecks.io figures as published July 2026 — verify with the vendor. FourSight prices are from our public pricing page (annual billing ≈ 25% discount).
Healthchecks.io Free: 20 checks — genuinely the most generous free heartbeat tier in the category (as published July 2026 — verify with the vendor). FourSight's Free plan covers 10 monitors but is uptime/ping only; heartbeats unlock on Growth.
Healthchecks.io Business ($20/mo, as published July 2026): 100 checks — still cron-only. You'd add a second tool for uptime, SSL, and status pages.
FourSight Growth ($40/mo): heartbeat/cron monitoring plus 100 monitors across all 8 check types, 30-second intervals, escalation policies, and 5 status pages — one tool replacing two.
Full FourSight plan details are on the pricing page — five flat tiers, annual billing ≈ 25% off, no per-monitor surprise fees.
Want the cost-only deep dive? See the Healthchecks.io pricing comparison.
Feature comparison
| Feature | FourSight | Healthchecks.io |
|---|---|---|
| Cron & Heartbeat | ||
| Ping-URL heartbeat checks | Growth+ | |
| Cron-expression schedules | Growth+ (5-field cron) | |
| Grace periods | Growth+ | |
| Free heartbeat checks | 20 free* | |
| Open source / self-hostable | ||
| Active Monitoring | ||
| HTTP uptime probing | ||
| SSL certificate expiry | Growth+ | |
| DNS drift detection | Growth+ | |
| Domain expiry tracking (RDAP) | Growth+ | |
| Keyword / content checks | Growth+ | |
| Port monitoring | Growth+ | |
| Multi-region quorum consensus | ||
| Alerting & Ops | ||
| Email / Slack / webhook alerts | Starter+ | |
| Many niche integrations (Matrix, ntfy…) | ||
| SMS alerts included | Pro+ | Credits |
| Escalation policies | Growth+ | |
| Incident management with timelines | Starter+ | |
| Hosted public status pages | Every plan | |
| Pricing | ||
| Free tier | 10 monitors (uptime/ping) | 20 checks (cron)* |
| Paid entry | $16/mo (50 monitors) | $20/mo (100 checks)* |
| Cron + uptime + SSL + status pages | $40/mo (Growth, all-in) | Healthchecks + second tool |
* Healthchecks.io figures as published July 2026 — verify current plans, prices, and policies with the vendor. FourSight figures reflect our current published plans.
Honest take
Comparison pages usually pretend the writer's tool wins every scenario. Here's the fair version — when FourSight is the right call, and when Healthchecks.io still is.
FourSight is the better fit when cron checks are half the requirement, not all of it.
Healthchecks.io is the honest recommendation in these cases.
Migration
Heartbeat migration is a URL swap: create the monitor, replace the ping URL in your jobs, deploy. No importer exists — each monitor is re-created manually in under a minute, and most teams re-create 20 checks in under 15 minutes.
Healthchecks.io's API (or dashboard) gives you every check's name, schedule or period, and grace time. That's the full spec to carry over.
Heartbeats unlock on Growth ($40/mo). If you want to feel the platform out first, start Free and migrate your uptime checks — then upgrade when you're ready to move the cron side.
Recreate each check with the same schedule (5-field cron expression) and grace period. FourSight issues a unique ping URL per monitor.
Replace hc-ping.com calls in crontabs, systemd timers, Kubernetes CronJobs, and CI configs with the FourSight heartbeat URLs. Deploy and watch the first pings arrive.
Create HTTP/SSL/DNS monitors for the surfaces Healthchecks.io couldn't see, attach a status page, and retire the second uptime tool (or the Healthchecks.io subscription) once the parallel run is clean.
No credit card. No import tool needed — monitors are just URLs plus a check type.
FAQ
For pure cron monitoring, yes — 20 free checks vs zero (FourSight heartbeats unlock on the $40 Growth plan). If cron jobs are all you monitor and free is the requirement, Healthchecks.io is the honest recommendation. FourSight wins when you also need uptime, SSL, DNS, or a status page and want one tool instead of two.
Functionally yes for the heartbeat core — schedules, grace periods, alerting. You lose self-hosting; you gain hosted infrastructure, active uptime/SSL/DNS checks, escalation policies, and status pages. If self-hosting is a compliance requirement, keep Healthchecks for internal jobs and use FourSight for the public-facing surface.
Create matching heartbeat monitors in FourSight (schedule + grace period), then swap the ping URLs in your crontabs, systemd timers, or CI configs. There's no importer, but each monitor takes under a minute — most teams re-create 20 checks in under 15 minutes.
No — FourSight is a hosted commercial service. If self-hosting the monitor is a hard requirement, Healthchecks.io (self-hosted) or Uptime Kuma are the right tools; some teams run one of those internally and use FourSight as the external multi-region watchdog.
FourSight heartbeats cover the core dead-man's-switch pattern: expected schedule, grace period, alert on miss. Healthchecks.io's richer signal set (start pings, fail pings, run-duration measurement) is deeper — if you rely on those, weigh that against the consolidation benefit.
Heartbeats ship in the plan built for teams running production workloads, alongside all 8 check types, escalations, and multi-user orgs. We'd rather be upfront: if you only need a handful of free cron checks, Healthchecks.io serves that better today.
Absolutely — plenty of teams keep free Healthchecks.io checks on low-stakes internal scripts and put revenue-critical jobs, uptime, SSL, and status pages on FourSight. The tools don't conflict.
Learn more
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Further reading
First-party docs and independent directories so you can verify the comparison above.
The verdict
Healthchecks.io is the best free cron monitor available, full stop. FourSight is what you graduate to when the job list grows into a monitoring surface — heartbeats plus multi-region uptime, SSL, DNS, and customer-facing status pages, consolidated into one flat $40 plan instead of a toolchain.
No credit card required. 10 free monitors. Multi-region consensus from day one.
FourSight Growth ($40/mo): heartbeat/cron monitoring plus 100 monitors across all 8 check types, 30-second intervals, escalation policies, and 5 status pages — one tool replacing two.
FourSight is the better fit when cron checks are half the requirement, not all of it.
Healthchecks.io is the honest recommendation in these cases.
Heartbeat migration is a URL swap: create the monitor, replace the ping URL in your jobs, deploy. No importer exists — each monitor is re-created manually in under a minute, and most teams re-create 20 checks in under 15 minutes.
Step 1 — 1. Export your check list: Healthchecks.io's API (or dashboard) gives you every check's name, schedule or period, and grace time. That's the full spec to carry over.
Step 2 — 2. Sign up and pick Growth: Heartbeats unlock on Growth ($40/mo). If you want to feel the platform out first, start Free and migrate your uptime checks — then upgrade when you're ready to move the cron side.
Step 3 — 3. Create matching heartbeat monitors: Recreate each check with the same schedule (5-field cron expression) and grace period. FourSight issues a unique ping URL per monitor.
Step 4 — 4. Swap ping URLs in your jobs: Replace hc-ping.com calls in crontabs, systemd timers, Kubernetes CronJobs, and CI configs with the FourSight heartbeat URLs. Deploy and watch the first pings arrive.
Step 5 — 5. Add the active half and consolidate: Create HTTP/SSL/DNS monitors for the surfaces Healthchecks.io couldn't see, attach a status page, and retire the second uptime tool (or the Healthchecks.io subscription) once the parallel run is clean.
Estimated time: 15–30 minutes for a typical setup
Healthchecks.io is the best free cron monitor available, full stop. FourSight is what you graduate to when the job list grows into a monitoring surface — heartbeats plus multi-region uptime, SSL, DNS, and customer-facing status pages, consolidated into one flat $40 plan instead of a toolchain.
Healthchecks.io — Official site & pricing (https://healthchecks.io/)
GitHub — healthchecks/healthchecks repository (https://github.com/healthchecks/healthchecks)
G2 — Healthchecks.io reviews (https://www.g2.com/products/healthchecks-io/reviews)
G2 — Website Monitoring Software category (https://www.g2.com/categories/website-monitoring)
| Feature | FourSight | Healthchecks.io |
|---|---|---|
| Ping-URL heartbeat checks | Growth+ | Yes |
| Cron-expression schedules | Growth+ (5-field cron) | Yes |
| Grace periods | Growth+ | Yes |
| Free heartbeat checks | No | 20 free* |
| Open source / self-hostable | No | Yes |
| HTTP uptime probing | Yes | No |
| SSL certificate expiry | Growth+ | No |
| DNS drift detection | Growth+ | No |
| Domain expiry tracking (RDAP) | Growth+ | No |
| Keyword / content checks | Growth+ | No |
| Port monitoring | Growth+ | No |
| Multi-region quorum consensus | Yes | No |
| Email / Slack / webhook alerts | Starter+ | Yes |
| Many niche integrations (Matrix, ntfy…) | No | Yes |
| SMS alerts included | Pro+ | Credits |
| Escalation policies | Growth+ | No |
| Incident management with timelines | Starter+ | No |
| Hosted public status pages | Every plan | No |
| Free tier | 10 monitors (uptime/ping) | 20 checks (cron)* |
| Paid entry |
6/mo (50 monitors)
|
0/mo (100 checks)* |
| Cron + uptime + SSL + status pages | $40/mo (Growth, all-in) | Healthchecks + second tool |
| Scenario | FourSight | Healthchecks.io |
|---|---|---|
| Cron monitoring only, up to 20 checks | No free heartbeats — Growth ($40/mo) is where they unlock. For this scenario, Healthchecks.io is simply the better deal. | Free — 20 checks, generous limits, open-source. The category's best free heartbeat tier. |
| Cron + uptime + SSL + a status page | Growth — $40/mo total: heartbeats, 100 multi-region uptime monitors, SSL/DNS/domain checks, 5 status pages, escalations. | Healthchecks.io Business (0/mo, 100 checks) + a separate uptime/status-page tool ( 5–30/mo) = ~$35–50/mo across two systems.
|
| Uptime now, cron later | Free (10 monitors) or Starter ( 6/mo, 50 monitors) today; add heartbeats by upgrading to Growth when needed.
|
Healthchecks.io can't cover the uptime half at any price — it's passive by design. |
For pure cron monitoring, yes — 20 free checks vs zero (FourSight heartbeats unlock on the $40 Growth plan). If cron jobs are all you monitor and free is the requirement, Healthchecks.io is the honest recommendation. FourSight wins when you also need uptime, SSL, DNS, or a status page and want one tool instead of two.
Functionally yes for the heartbeat core — schedules, grace periods, alerting. You lose self-hosting; you gain hosted infrastructure, active uptime/SSL/DNS checks, escalation policies, and status pages. If self-hosting is a compliance requirement, keep Healthchecks for internal jobs and use FourSight for the public-facing surface.
Create matching heartbeat monitors in FourSight (schedule + grace period), then swap the ping URLs in your crontabs, systemd timers, or CI configs. There's no importer, but each monitor takes under a minute — most teams re-create 20 checks in under 15 minutes.
No — FourSight is a hosted commercial service. If self-hosting the monitor is a hard requirement, Healthchecks.io (self-hosted) or Uptime Kuma are the right tools; some teams run one of those internally and use FourSight as the external multi-region watchdog.
FourSight heartbeats cover the core dead-man's-switch pattern: expected schedule, grace period, alert on miss. Healthchecks.io's richer signal set (start pings, fail pings, run-duration measurement) is deeper — if you rely on those, weigh that against the consolidation benefit.
Heartbeats ship in the plan built for teams running production workloads, alongside all 8 check types, escalations, and multi-user orgs. We'd rather be upfront: if you only need a handful of free cron checks, Healthchecks.io serves that better today.
Absolutely — plenty of teams keep free Healthchecks.io checks on low-stakes internal scripts and put revenue-critical jobs, uptime, SSL, and status pages on FourSight. The tools don't conflict.