# Source: src/lib/business/vs-pages.ts → vsPages[sentry]. Keep in sync.

# SiteGuardian vs Sentry (2026)

> SiteGuardian vs Sentry. Sentry is the dominant error-tracking SDK — it watches your code paths, traces performance, and ships release health and session replay. Sentry does not crawl your site for broken links, does not run a dedicated checkout-path probe, and does not run a dedicated form-path probe. SiteGuardian ships uptime, SSL expiry, broken-link coverage, checkout-failure monitoring, and form-failure monitoring on every paid plan, in one loud email.

URL: /vs/sentry
Canonical page: /vs/sentry
Site index: /llms.txt
Hub of all comparisons: /vs/all
Updated: 2026

## TL;DR
- SiteGuardian wins for the URLs your code does not see; Sentry wins for the code paths your URL probe cannot reach. Sentry is the dominant error-tracking SDK — it watches your code paths via SDK, traces performance, ships release health and session replay, and runs a Seer AI debugger (Autofix + Suspect Commits + root-cause) on Team and Business.
- When Sentry: you have an app or backend codebase and need error tracking, performance tracing, release health, and session replay — and you have already wired (or are willing to wire) the SDK into your runtime.
- When SiteGuardian: you have a storefront, a URL list, and a checkout or form that you want watched from the outside without instrumenting your app code.
- The verdict: Sentry for code paths; SiteGuardian for the URLs your code does not see.

## Pricing at a glance
- SiteGuardian Starter — $19/mo — 1 site, 10 URLs, every-5-min probes.
- SiteGuardian Pro — $39/mo — 3 sites, 50 URLs, every-1-min probes.
- SiteGuardian Lifetime — $299 once — 1 site, 50 URLs, every-5-min probes, every future update included.
- Sentry Developer — $0/month — 1 user, 5K errors/mo, 5M spans/mo, 50 replays/mo, 1 uptime + 1 cron monitor, email alerts.
- Sentry Team — $26/month, billed annually — Unlimited users, 50K errors/mo, 20 dashboards, Seer AI debugger (sub required), integrated alerts.
- Sentry Business — $80/month, billed annually — Unlimited dashboards, 1,000 metric monitors, anomaly detection, SAML + SCIM, up to 90-day retention.
- Sentry Enterprise — Custom — Technical account manager, dedicated support, custom data residency, advanced inbound filtering.

## How they differ
- Probe cadence (paid) — SiteGuardian: Every minute; Sentry: Single uptime monitor, plus per-alert add-on ($1.00/alert).
- Probe cadence (free tier) — SiteGuardian: not available; Sentry: 1 uptime monitor on Developer free.
- Alert destination — SiteGuardian: One inbox; Sentry: Email (Developer) + Slack, MS Teams, PagerDuty, Discord, webhooks (Team+).
- Public status page — SiteGuardian: not available; Sentry: not available.
- Custom slow threshold per URL — SiteGuardian: On every plan; Sentry: not available.
- Free tier — SiteGuardian: not available; Sentry: Developer free, 5K errors/mo, 5M spans/mo, 50 replays/mo.
- Pricing model (paid) — SiteGuardian: $19/mo Starter, $39/mo Pro, $299 once Lifetime; Sentry: Team $26/mo annual; Business $80/mo annual; Enterprise custom.
- AI-powered root cause — SiteGuardian: Not yet available; Sentry: Seer AI debugger (Autofix + Suspect Commits + root-cause) on Team/Business.
- SSL expiry alerts — SiteGuardian: included; Sentry: not available.
- Broken-link coverage — SiteGuardian: Watches your configured URL list; Sentry: not available.
- Checkout-failure monitoring — SiteGuardian: included; Sentry: not available.
- Form-failure monitoring — SiteGuardian: included; Sentry: not available.

## When each is the right fit
- SiteGuardian — A one-founder Shopify, WordPress, Squarespace, or Wix shop that wants the four SG-killer checks in one inbox without instrumenting the storefront.
- Sentry — An app team (backend / frontend / mobile engineers) that needs error tracking, performance tracing, release health, and session replay across a deployed codebase, and is willing to wire the SDK into the runtime.

## The verdict
- Sentry for code paths; SiteGuardian for the URLs your code does not see.
- Pick SiteGuardian if: A one-founder Shopify, WordPress, Squarespace, or Wix shop that wants uptime, broken-link coverage, checkout-failure monitoring, form-failure monitoring, and SSL expiry in one loud email without instrumenting the storefront.
- Pick Sentry if: An app team with a deployed codebase that needs error tracking, performance tracing, release health, session replay, and the Seer AI debugger wired in via SDK, and is willing to live without a URL-side probe product.

## Buying-time FAQ
- Q: Does SiteGuardian have a free tier like Sentry?
  A: No. SiteGuardian is paid from the first URL. Starter is $19 a month, Pro is $39 a month, Lifetime is $299 once. Sentry still runs a Developer free tier (1 user, 5K errors/mo, 5M spans/mo, 50 session replays/mo as of August 2026). Choose SiteGuardian when you want the smallest tool and four URL-side checks in one inbox; choose Sentry when you need error tracking, performance tracing, release health, and session replay wired into a codebase via SDK.
- Q: Is the probe cadence the same as Sentry?
  A: No. Sentry is not an HTTP probe product — its strength is in-app error tracking via SDK. Sentry does ship a single uptime monitor on every plan (Developer, Team, Business) as a Labs/NEW peripheral, with additional uptime alerts billed at $1.00/alert. SiteGuardian probes every minute on Pro and every five minutes on Starter and Lifetime across the URL list you configured.
- Q: Does SiteGuardian support a public status page like Sentry?
  A: No, neither does. Sentry does not ship a public status page — it is an in-app error-tracking SDK, not a customer-facing status product. SiteGuardian also does not ship a public status page; status pages are something you would pair alongside it.
- Q: Can I keep using Sentry’s free Developer tier while I try SiteGuardian?
  A: Yes — and it is the realistic pairing. Sentry watches your code paths via SDK; SiteGuardian watches your URLs from the outside. Run Sentry free for the in-app signal and SiteGuardian Starter at $19/mo for the URL-side signal.
- Q: Which one is cheaper for one storefront?
  A: Different categories, so it is not an apples-to-apples comparison. Sentry Developer free is $0 for the code-path side; SiteGuardian Starter is $19/mo for the URL-side check. A real one-founder shop on Shopify or WordPress ends up running both.
- Q: Does SiteGuardian monitor SSL expiry?
  A: Yes. SiteGuardian ships SSL expiry monitoring on every paid plan, included — no add-on. Sentry does not ship SSL expiry alerts on any tier (Developer, Team, Business, or Enterprise) as of August 2026.
- Q: Does SiteGuardian crawl my site for broken links like Oh Dear?
  A: Partially. SiteGuardian does not ship a full site crawler, and neither does Sentry. SiteGuardian does watch the URL list you configured during setup and re-probes it for broken links on the same cadence. Oh Dear ships a deeper crawler that follows links off the list.
- Q: Can SiteGuardian tell me when my checkout breaks?
  A: Yes. Configure your checkout URL on SiteGuardian and a separate probe runs against it on the same cadence as your uptime checks. Sentry is an in-app error tracker: it will catch an exception thrown inside your checkout handler only if the SDK is wired into the runtime and the exception is reported back. A static storefront, a no-code shop, or a checkout hosted on a third-party subdomain gets no Sentry signal at all.
- Q: Can SiteGuardian watch my contact form and report it when it stops sending?
  A: Yes. Add the form URL as a probe or wire a heartbeat monitor, and SiteGuardian pings it on the same cadence as your other URLs. Sentry ships the same HTTP layer only as the peripheral single uptime monitor on every plan, not as a form-path probe.

## Freshness
- Pricing and features last checked July 2026. Competitor offerings may change.

## Related reads
- /vs/all — every comparison in one matrix.
- /vs/uptime-robot — SiteGuardian vs UptimeRobot.
- /vs/betterstack — SiteGuardian vs Betterstack.
- /broken-link-monitor — Broken link monitor.
- /ssl-expiry-monitor — SSL expiry monitor.
- /checkout-failure-monitoring — Checkout failure monitoring.
- /form-failure-monitoring — Form failure monitoring.
- /online-store-uptime — Online store uptime.
- /pricing — See plans & pricing.
- /audit — Free URL audit.

# Parent cluster: Research → /research