Calibre
Calibre is an Australian SaaS platform founded in 2017 that unifies Real User Monitoring, CrUX, and synthetic performance testing to help SEOs, agencies, product teams, and developers track and improve Core Web Vitals. Bootstrapped, profitable, and small-team, it sells via self-serve subscription with deep CI/CD integrations.
- Company typePrivate
- Founded2017
- HeadquartersMelbourne, Australia
- Headcount1–10
- GTM typeB2B
- OfferingSoftware
What Calibre does
Calibre Analytics Pty Ltd is an Australian SaaS company founded in 2017 by Ben Schwarz (CEO) and Karolina Szczur (Design Lead) that operates a web performance monitoring platform. The product unifies three data sources — Real User Monitoring (RUM), Chrome User Experience Report (CrUX) monitoring, and Synthetic Page Speed Testing — under a single dashboard, targeting Core Web Vitals (LCP, CLS, INP) measurement and regression detection for SEOs, digital agencies, product teams, and developers. Named customers include Tiqets, Chromatic, and ITX Corp, with a high-profile individual endorsement from Google's Paul Irish.
The platform is built on a cloud-native AWS architecture, using AWS Lambda@Edge to power a globally distributed edge network for RUM data ingestion, with TLS 1.3 in transit, AES-256 at rest, and AWS KMS-managed encryption keys. The RUM script uses a privacy-first design (no cookies, no IP storage, ephemeral sessionStorage identifiers, configurable EEA exclusion) and supports Signature-Based Subresource Integrity for tamper detection. A full automation layer is offered via a Command Line Interface, Node.js API, GraphQL API, HTTP Site API, and webhooks, with native integrations into GitHub, GitHub Actions, Slack, Zapier, Netlify, Vercel, and Render.
Calibre monetizes via subscription SaaS billed monthly or annually in USD, AUD, or EUR, with Starter, Team, and Company tiers and Test Pack add-ons for synthetic capacity. Distribution is product-led growth: a 15-day free trial with no credit card, free public tools (Core Web Vitals Test, Website Speed Test, Speed Comparison, Website Speed Leaderboards), and a performance newsletter (perf.email) drive organic acquisition. The Company is bootstrapped, profitable since founding, headquartered in Fitzroy, Victoria, and operates with a remote team hired across 60+ countries.
Calibre firmographics
Firmographics- Name
- Calibre
- Legal name
- Calibre Analytics Pty Ltd
- Website
- https://calibreapp.com
- Company type
- Private
- Founded year
- 2017
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Calibre is an Australian SaaS platform founded in 2017 that unifies Real User Monitoring, CrUX, and synthetic performance testing to help SEOs, agencies, product teams, and developers track and improve Core Web Vitals. Bootstrapped, profitable, and small-team, it sells via self-serve subscription with deep CI/CD integrations.
- Ownership category
- akta.pro rank
Where Calibre is headquartered
LocationHeadquarters
- HQ city
- Melbourne
- HQ country
- Australia
- HQ region
- Oceania
Offices1 record
Markets served
Calibre business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Infrastructure, Personnel, Marketing or Sales, Operations
Revenue model
- Subscription SaaS: Primary revenue stream from subscription fees charged on a periodical basis (monthly or annual billing). Fees are payable in advance. Customers can select currency (USD, AUD, or EUR). Company Plan includes SAML SSO and Audit Log features.
- Test Packs: Add-on purchases that increase synthetic testing capacity for monitoring additional sites, pages, or test profiles without upgrading plan tier.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | Starter, Team, and Company plans with RUM included |
| Subscription | Annual | Company Plan with SAML SSO and Audit Log |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels5 records
Calibre product offering
Product offeringCore offering
Calibre is a web performance monitoring SaaS platform that lets teams track real user experience, Google's Core Web Vitals and synthetic page speed tests in one product. It combines Real User Monitoring (RUM), Chrome User Experience Report (CrUX) tracking and Synthetic Testing with Lighthouse, exposed through a web app, REST/GraphQL/Node APIs, CLI and integrations for SEOs, agencies, product teams and developers. Revenue comes from recurring subscriptions (Starter, Team, Company) plus Test Pack add-ons, with a 15-day free trial.
Product overview
Calibre is a web performance monitoring platform offering three integrated data sources — Real User Monitoring (RUM), Chrome User Experience Report (CrUX) Monitoring, and Synthetic Page Speed Testing — unified under a single platform. The product monitors Core Web Vitals (LCP, CLS, INP) across real user sessions and lab-based synthetic tests, combining field data from actual visitors with controlled lab testing. The platform is designed for teams of all sizes including SEOs, agencies, product teams, and developers, and includes free standalone tools (Website Speed Leaderboards, Core Web Vitals Test, Website Speed Test, Speed Comparison) that can be used without a subscription.
Differentiator
Problem solved
Functional benefit
Products and services
- Real User Monitoring (RUM) Real-time Core Web Vitals and performance data collected from actual visitor sessions across browsers and devices, including live visitor counts and audience breakdowns by location, device and browser. Privacy-first design with no cookies, no IP storage, ephemeral sessionStorage identifiers and configurable EEA/EU exclusion. Includes element-level attribution for LCP, CLS and INP and Signature-Based Subresource Integrity for tamper-evident script delivery. Targeted at product teams, agencies and SEOs who need real-user visibility.
- Chrome User Experience Report (CrUX) Monitoring Tracks Google's public Chrome User Experience Report dataset for every monitored site, surfacing the same Core Web Vitals data Google uses for search site speed rankings. Enables benchmarking of competitor sites without deploying additional instrumentation and feeds the Sites dashboard and CrUX Pages Leaderboard. Targeted at SEOs and agencies that need Google-aligned field data for ranking and competitor analysis.
- Synthetic Page Speed Testing Scheduled and on-demand automated performance audits run via Google Lighthouse on Calibre's Test Agents across 17 global locations, producing lab data under controlled devices, network speeds and locations. Includes form authentication for testing logged-in pages, Lighthouse audits for Performance, Accessibility, SEO and Best Practices, third-party impact analysis, Performance Budgets and deploy markers. Targeted at product, engineering and SEO teams that need reproducible, comparable performance data.
- Website Speed Leaderboards Free tool that benchmarks the world's top websites by industry and ranks them by Core Web Vitals performance. Used without a Calibre subscription and serves as a top-of-funnel acquisition channel for the platform. Targeted at anyone evaluating industry performance, including SEOs, agencies and product teams.
- Core Web Vitals Test Free tool that tests whether a website passes Google's Core Web Vitals assessment criteria. Used without a subscription and drives organic acquisition into Calibre's paid platform. Targeted at SEOs, agencies and site owners checking Core Web Vitals pass/fail status.
- Website Speed Test Free tool that measures and audits any public URL for performance, producing a full Lighthouse report with metrics, audits, filmstrip and HAR file. Used without a subscription and functions as a top-of-funnel entry point to Calibre's paid monitoring. Targeted at developers, SEOs and product teams performing ad-hoc audits.
- Speed Comparison Free tool that compares up to five websites side by side for speed and performance metrics. Used without a subscription and supports use cases such as competitor benchmarking and agency client comparisons. Targeted at agencies, SEOs and product teams evaluating relative site performance.
Quantifiable outcome
- Identify exact elements causing LCP, CLS, and INP issues for targeted fixes
- +2 more outcomes
Companies that use Calibre
Customer profileNamed customers3 records
Segments4 records
Ideal customer profiles4 records
Calibre technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration8 records
Feature8 records
Calibre partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered core.
- GitHubcoreGitHub Pull Request Reviews integration allows automatic performance testing against pull request preview deployments, posting results as GitHub comments to catch performance regressions before code merges. Also includes GitHub Actions integration for CI/CD workflows.
- SlackcoreSlack integration delivers Budget Alerts, Snapshot summaries, and other notifications directly to Slack channels for team collaboration on performance issues.
- NetlifycoreNetlify integration allows marking deployments on charts and triggering tests automatically when deployments occur on Netlify.
- VercelcoreVercel integration enables triggering Snapshots as part of Vercel deployment workflows.
- Amazon Web Services (AWS)coreAWS Lambda@Edge powers the globally distributed edge network for RUM data processing. AWS hosts all infrastructure including primary database. AWS KMS manages encryption keys with automatic rotation.
- GooglecoreGoogle Auth SSO for user authentication. Calibre integrates Chrome User Experience Report (CrUX) data and uses Lighthouse (Google's open-source tool) for synthetic testing audits.
- StripecoreStripe processes payment transactions. Calibre does not store full credit card numbers on its servers.
Scale indicators3 records
Recent moves6 records
Expansion highlights6 records
Calibre competitors and assessment
Company assessmentDirect peers
- Treo: Treo (formerly Treo by Yotta) is a website speed monitoring tool that tracks Core Web Vitals using CrUX and synthetic checks for thousands of sites. It competes directly with Calibre's CrUX monitoring and free tools, especially for SEOs and agencies benchmarking competitors.
- SpeedCurve: SpeedCurve is a web performance monitoring SaaS offering synthetic testing, RUM, and Core Web Vitals tracking with a focus on UX. It is the closest direct competitor to Calibre, targeting the same personas (performance engineers, product teams, agencies) with comparable dashboards and deploy-marker style features.
- DebugBear: DebugBear provides synthetic page speed testing and Core Web Vitals monitoring using Google Lighthouse, with competitive analysis and continuous monitoring. It targets a very similar buyer (frontend developers and SEOs) and competes head-to-head on lab-grade performance testing and competitor benchmarking.
- GTmetrix: GTmetrix offers Lighthouse-based synthetic testing and historical performance reporting with a popular free tier. It is comparable to Calibre's Website Speed Test and Synthetic product, addressing the same SEO/developer audience with comparable lab-grade performance data.
- WebPageTest: WebPageTest is the foundational synthetic page-speed testing tool (now operated by Catchpoint) that Calibre's Synthetic product is built upon. It is directly comparable as a lab-testing platform serving the same developer and SEO buyers, and represents the open-source baseline Calibre augments with managed UX.
Broad incumbents
- Sentry: Sentry is a broad application monitoring platform for errors and performance. It overlaps with Calibre on frontend performance and transaction tracing for developers, and competes for the same developer-tool budget, though Calibre specializes in web performance and SEO use cases Sentry does not emphasize.
- Datadog: Datadog is a large-scale cloud observability platform with Real User Monitoring and Synthetic Monitoring modules. It competes with Calibre in mid-market and enterprise for web-performance budgets, though Calibre's depth in Core Web Vitals and developer-first PLG motion differentiates it from Datadog's broad-portfolio sales motion.
- New Relic: New Relic is an enterprise observability platform that includes browser RUM and synthetic monitoring. It is comparable as a broad incumbent offering overlapping web-performance capabilities, particularly for enterprise buyers, though its product is not specialized for SEO-driven Core Web Vitals workflows.
- Catchpoint: Catchpoint operates the WebPageTest platform and provides enterprise synthetic and RUM monitoring with a global test agent network. It overlaps with Calibre's Synthetic product on global testing infrastructure and competes for enterprise performance-engineering buyers.
Emerging players
- Cloudflare Observatory: Cloudflare bundles Web Analytics and Lighthouse-based Observatory into its CDN/network platform. It overlaps with Calibre on synthetic testing and RUM, especially for sites already on Cloudflare's network, and represents a potential bundling threat via free core web vitals insights.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Calibre social profiles
Digital presenceCalibre compliance and trust
Trust signalCompliance3 records
Calibre financial estimates
Financial estimateRevenue estimate
Valuation estimate
Calibre leadership team
Management profileNumber of profiles
Profiles2 records
Calibre funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Calibre M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Calibre
What does Calibre do?
Calibre is a web performance monitoring SaaS platform that lets teams track real user experience, Google's Core Web Vitals and synthetic page speed tests in one product. It combines Real User Monitoring (RUM), Chrome User Experience Report (CrUX) tracking and Synthetic Testing with Lighthouse, exposed through a web app, REST/GraphQL/Node APIs, CLI and integrations for SEOs, agencies, product teams and developers. Revenue comes from recurring subscriptions (Starter, Team, Company) plus Test Pack add-ons, with a 15-day free trial.
Is Calibre a public or private company?
Calibre is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Calibre founded?
Calibre was founded in 2017. It employs 1 to 10 people.
Where is Calibre based?
Calibre is headquartered in Melbourne, Australia, in the Oceania region.
How does Calibre make money?
Two revenue lines are on record. Subscription SaaS are the primary driver. The others are test Packs.
Who are Calibre's main competitors?
Direct peers on record are Treo, SpeedCurve, DebugBear, GTmetrix and WebPageTest. Broad incumbents are Sentry, Datadog, New Relic and Catchpoint. Cloudflare Observatory is listed as an emerging player.
Does Calibre have an API?
Yes. Calibre offers multiple programmatic interfaces: (1) Node.js API for managing Sites, Snapshots, Test Profiles, Deploy Markers and more from Node.js applications; (2) GraphQL API as the underlying API powering the CLI and Node.js API, with a rate limit of 10 requests per second; (3) HTTP Site API for lightweight JSON-over-HTTP interface (no runtime dependencies) authenticated with a Site Secret rather than an API Token, ideal for post-deploy hooks in CI/CD pipelines; (4) Command Line Interface (CLI) for managing Sites, Snapshots, Single Page Tests, Deploy Markers and more from the terminal. Admin Tokens provide full access to all Sites; Personal Access Tokens (PAT) are scoped to user permissions. Tokens can be set to expire and restricted by IP address. Webhooks send HTTP callbacks when events occur (Snapshot completing, Performance Budget state changes), signed with HMAC signature for verification. Developer documentation is at calibreapp.com/docs/automation/node.