Calibre vs Sitechecker in 2026: Performance-specialist monitoring vs an all-in-one SEO command center
Calibre goes deep on one job, real user, synthetic, and CrUX performance data. Sitechecker goes wide, bundling crawling, rank tracking, white-label reports, and an AI Visibility Tracker into a single agency dashboard.
Calibre
Sitechecker- Calibre is a performance specialist, RUM plus synthetic plus Google CrUX. Sitechecker is a broader SEO platform: crawling, rank tracking, white-label reports, and an AI Visibility Tracker in one subscription.
- Sitechecker has no real user monitoring, no scheduled synthetic testing, and no Google CrUX integration, the three things Calibre is built around.
- Sitechecker's AI Visibility Tracker, which monitors ChatGPT and Perplexity mentions, is not available on the $89/month Basic plan; it requires the $219/month Standard plan or higher.
- Calibre ships an Automation API and CLI on every plan starting at $75/month. Sitechecker gates API access to Enterprise, its highest and only custom-priced tier.
- Sitechecker offers white-label reports from the Standard plan, a feature Calibre does not have anywhere in its public feature set.
- Calibre offers a 15-day free trial with no credit card required. Sitechecker has no free tier and does not clearly document a public trial.
Calibre and Sitechecker both carry the Technical SEO label, but they were built to solve different-sized problems. Calibre is a specialist: real user monitoring, scheduled synthetic tests, and Google CrUX data, all measuring page speed and nothing else. Sitechecker is a generalist built for agencies: a website crawler, a rank tracker, white-label reports, SEO alerts, and an AI Visibility Tracker that monitors how a site is referenced in ChatGPT and Perplexity answers, all under one $89-a-month subscription. Neither tool does real user monitoring or pulls Google CrUX data the way Calibre does, and Calibre has no crawler, rank tracker, or AI visibility feature at all. The decision comes down to whether you need performance depth or SEO breadth, and whether an API matters enough to pay for it.
The tools at a glance
Calibre
Web performance monitoring platform that unifies real user monitoring, Google CrUX data, and synthetic page speed tests for teams serious about site speed.
Calibre does one job and does it thoroughly: it tells you how a site actually performs, using real visitor sessions, scheduled synthetic tests, and Google CrUX data pulled directly into the dashboard. There is no crawler here and no rank tracker, this is a tool for teams who already know their site's technical issues and need to measure the speed side continuously rather than periodically.
The Automation API and CLI are the other half of the pitch, letting development teams trigger tests from CI/CD pipelines and fail a build when a performance budget is breached. That level of API access is included from the $75/month Starter plan, no upgrade required, which is a meaningfully different posture from tools that lock API access behind an enterprise tier.
None of that comes cheap for a team that also needs crawling or rank tracking. Calibre has no free tier past its 15-day trial, and the RUM session caps on Starter and Team mean a site with real traffic will need to budget for an upgrade sooner than the sticker price suggests.
| Feature | Starter $75/month | Team $150/month | Company $1,500/month |
|---|---|---|---|
| Real User sessions per month | 5,000 | 10,000 | 1,000,000 |
| Synthetic tests per month | 5,000 | 15,000 | 50,000 |
| Google CrUX data | Yes | Yes | Yes |
| API and CLI access | Yes | Yes | Yes |
| Team seats | 3 | 10 | 50 |
Sitechecker
SEO command center for agencies managing multiple client sites, with crawling, rank tracking, technical issue detection, and AI visibility tracking from a unified dashboard.
Sitechecker packages several SEO workflows that would otherwise require three or four separate subscriptions: a crawler that flags broken links and duplicate content, a rank tracker with competitor comparisons, and an alerts system that flags significant ranking or crawl changes before a client notices them. For an agency running a portfolio of small-to-mid client sites, consolidating into one dashboard is the entire value proposition.
The AI Visibility Tracker is the newer addition and the one differentiator versus most tools at this price point: it monitors how a site is referenced in AI-generated responses from ChatGPT and Perplexity, tracking whether pages are cited as sources. It is not available on the entry Basic plan, though, only unlocking at Standard for $219/month alongside white-label reporting.
What Sitechecker does not have is real user monitoring, synthetic performance testing, or Google CrUX integration, and there is no API access below the custom-quoted Enterprise tier. For a team whose main need is understanding actual page speed against Google's own measurement, Sitechecker's crawl-based technical checks do not go as deep as a dedicated performance tool.
| Feature | Basic $89/month | Standard $219/month | Premium $379/month | Enterprise Contact for pricing |
|---|---|---|---|---|
| Website Crawler | Yes | Yes | Yes | Yes |
| Rank Tracker | Yes | Yes | Yes | Yes |
| AI Visibility Tracker | No | Yes | Yes | Yes |
| White Label Reports | No | Yes | Yes | Yes |
| SEO Alerts | Yes | Yes | Yes | Yes |
| API access | No | No | No | Yes |
Head-to-head feature comparison
| Feature | Calibre | Sitechecker |
|---|---|---|
| Core function | Continuous production performance monitoring | Crawling, rank tracking, and monitoring for agencies |
| Real user monitoring (RUM) | Yes, from 5,000 sessions/month on Starter | No |
| Scheduled synthetic performance testing | Yes, on every plan | No |
| Google CrUX field data | Yes, pulled directly into the dashboard | No |
| Site crawler for technical issues | No, not a crawler | Yes, core function |
| Rank tracking | No | Yes |
| AI Visibility Tracker | No | Yes, from Standard ($219/month) |
| White-label reporting | Not listed | Yes, from Standard ($219/month) |
| API access | Yes, on every plan | Enterprise only |
| Free trial | 15 days, no card required | Not documented as a permanent public trial |
| Starting price | $75/month | $89/month |
Considering AI Peekaboo alongside Calibre and Sitechecker?
Calibre has no AI search visibility feature at all. Sitechecker's AI Visibility Tracker is real but limited, it does not appear until the $219/month Standard plan, and Sitechecker's API is reserved for Enterprise, so there is no way to pull that AI visibility data into your own reporting pipeline on a standard plan. AI Peekaboo tracks brand mentions across ChatGPT, Gemini, Perplexity, Google AI Overviews, and Google AI Mode with a read and write API included from $50/month, plus a Looker Studio connector and white-label delivery with guest links. For a team whose actual priority is AI search visibility rather than crawling or rank tracking, it is a more direct and cheaper starting point than upgrading Sitechecker to unlock the feature.
Read the AI Peekaboo review →Which should you choose?
CalibreSitecheckerCalibreCalibreSitecheckerCalibreSitecheckerThe honest comparison here is depth versus breadth. Calibre does not compete with Sitechecker on crawling or rank tracking because it was never built to; Sitechecker does not compete with Calibre on real user monitoring or CrUX because those require different infrastructure entirely. The one place they genuinely overlap is Core Web Vitals, and even there the approaches differ: Calibre measures it continuously from real sessions and Google's own field data, while Sitechecker surfaces it as part of a broader crawl. Sitechecker's AI Visibility Tracker is the more interesting wildcard, since Calibre has nothing comparable, but it is gated behind a $219/month plan that is nearly three times Calibre's entry price.
Bottom line
Pick Calibre if page speed measurement against Google's own CrUX data is the actual job, and you already have a crawler or rank tracker elsewhere. Pick Sitechecker if you are a small agency that wants crawling, rank tracking, alerts, and white-label client reports consolidated into one $89-a-month tool, and treat the AI Visibility Tracker as a reason to consider the $219/month Standard tier rather than a Basic-plan feature. Neither tool covers both jobs well, so a team that genuinely needs performance-grade monitoring and full-breadth SEO tooling should expect to run both rather than force one to do the other's work.
Frequently asked questions
Does Sitechecker track real user performance data the way Calibre does?
No. Sitechecker has no real user monitoring, no scheduled synthetic testing, and no Google CrUX integration. Its technical checks come from crawling the site rather than continuous production monitoring, which is the core function Calibre is built around.
Is Sitechecker's AI Visibility Tracker available on the cheapest plan?
No, the AI Visibility Tracker is not included on Sitechecker's $89/month Basic plan. It becomes available starting on the $219/month Standard plan, alongside white-label reporting, which is a significant jump for a team that only wants the AI visibility feature.
Which tool has an API I can actually use without an enterprise contract?
Calibre includes an Automation API and CLI on every plan, starting at $75/month. Sitechecker restricts API access entirely to its Enterprise tier, which requires contacting sales for custom pricing, so there is no self-serve API option on Sitechecker below that.
Can I use Calibre for rank tracking or crawling instead of Sitechecker?
No. Calibre has no rank tracker and no website crawler; it exclusively measures page performance through real user monitoring, synthetic tests, and Google CrUX data. For crawling and rank tracking, Sitechecker or a dedicated crawler is required.
Is Sitechecker a good fit for an agency that wants AI search visibility reporting for clients?
Sitechecker's AI Visibility Tracker gives agencies a starting point for reporting on ChatGPT and Perplexity mentions, but it requires the $219/month Standard plan and lacks API access outside Enterprise. Agencies whose primary need is AI visibility monitoring with API access and white-label delivery from a lower price point should also evaluate a dedicated tool like AI Peekaboo.
Does Calibre offer white-label reporting for agency clients?
No, white-label reporting is not listed anywhere in Calibre's public feature set. Sitechecker offers white-label reports starting on its $219/month Standard plan, which makes it the better fit of the two for agencies delivering branded client deliverables.