Calibre vs Screpy in 2026: Dedicated performance monitoring vs a $10/month all-in-one dashboard
Calibre goes deep on one thing, Core Web Vitals, with real user monitoring and Google CrUX data built in. Screpy goes wide across auditing, rank tracking, uptime, and page speed for a fraction of the price, with no API on any plan.
Calibre
Screpy- Calibre is a dedicated performance monitor combining RUM, synthetic testing, and Google CrUX data starting at $75/month; Screpy bundles page speed with auditing, rank tracking, and uptime monitoring starting at $10/month.
- Neither Calibre nor Screpy offers a permanent free tier: Calibre has a 15-day trial, Screpy offers a free trial before its $10 Lite plan begins.
- Calibre ships an Automation API and CLI on every plan; Screpy has no API access on any of its three tiers, Lite, Pro, or Advanced.
- Screpy includes rank tracking and uptime monitoring, features Calibre does not have at all; Calibre includes Google CrUX field data, which Screpy does not offer.
- Screpy's white-label PDF reporting is available from its $30/month Pro tier; Calibre has no white-label reporting feature listed anywhere in its public feature set.
- Screpy is in the middle of a platform rebuild the vendor has flagged publicly, adding short-term uncertainty about feature stability for current users.
- Calibre's team seats are capped at 3, 10, or 50 depending on tier; Screpy includes unlimited team members and unlimited projects on every plan, including the $10 Lite tier.
Calibre and Screpy both track page speed, but that is close to where the overlap ends. Calibre is a dedicated performance monitoring platform: real user sessions, scheduled synthetic tests, and Google CrUX field data on one dashboard, starting at $75 a month with a 15-day trial. Screpy is a generalist dashboard that bundles website auditing, rank tracking, uptime monitoring, and Core Web Vitals into one subscription starting at $10 a month, aimed at teams who would otherwise pay for four separate tools. If page speed diagnostics are the entire job, Calibre is built for exactly that. If the job is broader and the budget is tight, Screpy covers more ground for less money, though neither its audit depth nor its page speed reporting matches a dedicated tool built around one discipline.
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 puts real user monitoring, scheduled synthetic tests, and Google CrUX field data on one consistent dashboard, which matters because those three data sources often disagree, and reconciling exports from separate tools wastes time you could spend fixing the actual problem. The RUM snippet captures LCP, CLS, and INP from real visitor sessions segmented by page, device, and geography.
The Automation API and CLI let engineering teams trigger tests from CI/CD pipelines and fail builds when performance budgets are exceeded, which turns performance monitoring into something enforced automatically rather than checked manually after the fact.
What Calibre does not do is anything outside performance: no rank tracking, no uptime monitoring, no white-label client reports. It is a single-discipline tool priced accordingly, and the Starter plan's 5,000 RUM sessions a month go fast on any site with real traffic, with a steep jump from Team at $150/month to Company at $1,500/month.
| 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 |
| Team seats | 3 | 10 | 50 |
| API and CLI access | Yes | Yes | Yes |
| RUM data retention | 90 days | 1 year | 2 years |
| Priority support | No | No | Yes |
Screpy
AI-powered SEO platform combining site audits, rank tracking, page speed monitoring, and uptime checks from $10 a month
Screpy is built around consolidation: instead of separate subscriptions for a site auditor, a rank tracker, an uptime monitor, and a page speed checker, it puts all four in one $10 to $59 a month dashboard. The audit module uses AI to translate crawl findings into plain-language, prioritized recommendations, which lowers the barrier for founders and marketers without a technical SEO background.
The page speed module pulls Lighthouse-based scores and Core Web Vitals data, tracked over time so you can see whether a site update helped or hurt. It sits alongside rank tracking and uptime monitoring in the same workspace, which removes the overhead of stitching together four different vendors for a small site.
The catch is depth and access. Crawl volume runs on a monthly credit system rather than an unlimited cap, there is no API on any tier so the data cannot be piped into a custom dashboard, and by Screpy's own comparison to Screaming Frog in its FAQ, its audit checks are described as thinner than a dedicated crawler. The platform is also mid-rebuild, which the vendor has flagged publicly.
| Feature | Lite $10/month | Pro $30/month | Advanced $59/month |
|---|---|---|---|
| Monthly credits | 2,500 | 8,000 | 30,000 |
| Unlimited projects | Yes | Yes | Yes |
| Unlimited team members | Yes | Yes | Yes |
| Rank tracker | Yes | Yes | Yes |
| Competitor tracking | No | Yes | Yes |
| White-label PDF reports | No | Yes | Yes |
| API access | No | No | No |
Head-to-head feature comparison
| Feature | Calibre | Screpy |
|---|---|---|
| Primary focus | Dedicated performance monitoring (RUM, synthetic, CrUX) | All-in-one SEO monitoring dashboard |
| Real user monitoring (RUM) | Yes | No |
| Synthetic performance testing | Yes | No |
| Google CrUX field data | Yes | No |
| Rank tracking | No | Yes |
| Uptime monitoring | No | Yes |
| Site audit / crawl checks | No | Yes (AI-assisted recommendations) |
| White-label reporting | No | Yes, from Pro tier ($30/mo) |
| API access | Yes (Automation API and CLI) | No, on any plan |
| Team seats | Capped at 3, 10, or 50 | Unlimited on every plan |
| Free trial | Yes, 15 days | Free trial available |
| Starting price | $75/mo | $10/mo |
Which should you choose?
CalibreScrepyCalibreScrepyScrepyCalibreThis is a depth-versus-breadth choice, not a like-for-like one. Calibre goes deep on a single discipline, performance, and prices accordingly. Screpy goes wide across four disciplines at a fraction of the cost, and is honest in its own materials that it will not match a dedicated tool's depth in any single one, including page speed. Neither RUM sessions nor CrUX accuracy are things Screpy claims to compete on; it is a monitoring dashboard with audit functionality bolted on, not a performance specialist.
Bottom line
Screpy is the better first purchase for a solo consultant or small business that has never paid for any SEO monitoring at all, since $10 a month covers four disciplines at once and the audit output, while not deep, is genuinely actionable for a non-technical site owner. Calibre is the better purchase once page speed specifically becomes a named, recurring problem, since its RUM and CrUX data are more accurate and detailed than what Screpy reports, and the Automation API lets you enforce budgets rather than just observe them. Do not expect Screpy's page speed module to replace Calibre once traffic and stakes are high enough to justify a dedicated tool; it was never built to compete at that depth.
Frequently asked questions
Is Screpy a real alternative to Calibre for tracking Core Web Vitals?
For a rough monthly health check, yes, Screpy pulls Lighthouse-based Core Web Vitals scores and tracks them over time. For rigorous performance work, no, Screpy has no real user monitoring and no Google CrUX field data, both of which Calibre includes from its cheapest plan, so the two are not equally precise measurement tools.
Does Screpy have an API like Calibre does?
No. Screpy does not offer API access on any of its three plans, Lite, Pro, or Advanced. Calibre includes an Automation API and CLI on every tier starting at $75 a month, which matters if you want to trigger tests from CI/CD pipelines or query historical data programmatically.
Why is Screpy so much cheaper than Calibre?
Screpy trades depth for breadth and price. Its $10-a-month Lite plan covers auditing, rank tracking, uptime monitoring, and page speed at a shallower level than a single dedicated tool in any of those categories, including Calibre for performance specifically, while Calibre focuses entirely on RUM, synthetic testing, and CrUX data and prices accordingly at $75 a month and up.
Can Calibre track keyword rankings or uptime the way Screpy does?
No. Calibre has no rank tracking or uptime monitoring features at all; its feature set is limited to real user monitoring, synthetic performance testing, and Google CrUX data. Teams that need rank tracking or uptime alerts alongside performance monitoring would need to pair Calibre with separate tools, or use Screpy instead if depth is not the priority.
Is Screpy stable enough to rely on right now given the platform rebuild?
Existing users keep access to the current version while Screpy's vendor finishes a publicly announced rebuild, so day-to-day use is not disrupted immediately. Teams that need long-term feature stability should factor in that some functionality may shift as the new version rolls out, a consideration Calibre does not carry since it is not mid-rebuild.
Which tool should a small agency buy first, Calibre or Screpy?
Screpy first, if the agency has no monitoring tools in place at all, since $10 a month covers four disciplines including white-label reporting from the Pro tier up. Add Calibre once a specific client's Core Web Vitals become a real, recurring issue that needs RUM data and CrUX accuracy Screpy was not built to provide.