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Comparison · Analytics
Calibre vs Countly
A side-by-side editorial comparison of Calibre and Countly — release velocity, themes, recent moves, and the top alternatives to consider.
Calibre vs Countly: at a glance
What is Calibre?
Lighthouse 13.6 shifts Calibre's scores and adds audits for how AI agents read your pages
Calibre's Test Agents moved to Chrome 156 and Lighthouse 13.6.0, which fixes how simulated throttling calculates LCP and FCP, so scores on PageSpeed Desktop and PageSpeed Mobile Test Profiles should mostly improve with no site change. Snapshots also gained Lighthouse's Agentic Browsing audits, covering the accessibility tree, WebMCP, llms.txt and ARD manifests, a category Google marks as under development. In September the free Core Web Vitals Test added four experimental CrUX ad metrics. August's work attached deployment markers to RUM charts and added all-pages Synthetic aggregates.
What is Countly?
Countly's two LTS lines now get the same security fixes within a week of each other.
Countly ships security patches on two LTS lines, 25.03 and 24.05. In late October 25.03.56 moved the Docker images to Node.js 24.22.1 for a Brotli CVE and brought Python 3.12.15 to the A/B testing stack; 25.03.58 tightened tokens: app-restricted tokens must state their permissions, password changes revoke a member's tokens, and single-use tokens hold under concurrent requests. 24.05.55 then brought those same fixes to the older line, including the isolated-vm sandbox for custom hook code that 25.03 adopted in August.
Calibre vs Countly: editorial side-by-side
Calibre
2.5ANALYTICS
Lighthouse 13.6 shifts Calibre's scores and adds audits for how AI agents read your pages
◆ Current state
Calibre's Test Agents moved to Chrome 156 and Lighthouse 13.6.0, which fixes how simulated throttling calculates LCP and FCP, so scores on PageSpeed Desktop and PageSpeed Mobile Test Profiles should mostly improve with no site change. Snapshots also gained Lighthouse's Agentic Browsing audits, covering the accessibility tree, WebMCP, llms.txt and ARD manifests, a category Google marks as under development. In September the free Core Web Vitals Test added four experimental CrUX ad metrics. August's work attached deployment markers to RUM charts and added all-pages Synthetic aggregates.
◆ Where it's heading
Calibre remains focused on explaining why a metric moved, and this release shows the hard case: the number can move because the test changed. Tracking new browser and Lighthouse data quickly is part of the product, as the same-day CrUX ad metrics showed. Agentic Browsing audits add a new question to a performance tool, whether agents can use a page, which is still early.
◆ Prediction
Expect deployment attribution to grow into alerting, since a regression tied to a commit is the natural trigger. Agentic Browsing audits should keep changing with Lighthouse, so Calibre's treatment of them depends on Google's direction.
Countly
5.0ANALYTICS
Countly's two LTS lines now get the same security fixes within a week of each other.
◆ Current state
Countly ships security patches on two LTS lines, 25.03 and 24.05. In late October 25.03.56 moved the Docker images to Node.js 24.22.1 for a Brotli CVE and brought Python 3.12.15 to the A/B testing stack; 25.03.58 tightened tokens: app-restricted tokens must state their permissions, password changes revoke a member's tokens, and single-use tokens hold under concurrent requests. 24.05.55 then brought those same fixes to the older line, including the isolated-vm sandbox for custom hook code that 25.03 adopted in August.
◆ Where it's heading
The work is about access control and supply chain, not new analytics features. Tokens, sessions and login counting are being tightened release by release, and the 24.05 line is being pulled up to the 25.03 runtime (Node.js 22 for custom code, Python 3.12 with CmdStanPy for A/B testing) instead of being left on older stacks. Feature work shows up only in small items such as explicitly named databases and a licence payment-overdue banner.
◆ Prediction
Expect more paired patches as token and session hardening continues on both lines. The entries don't say how long 24.05 will keep receiving backports.
Alternatives to Calibre and Countly
Other Analytics products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Calibre or Countly.
OpenMetadata
OpenMetadata reaches 2.1 rc1 after a month of repairing 2.0's connectors.
Stitch
Stitch keeps patching connectors one replication bug at a time.
Datawrapper
Datawrapper's October is touch tooltips, keyboard focus and small chart repairs.
Fluent Bit
Fluent Bit spends October bounding what its inputs will accept.
Axiom
Axiom makes agent work checkable, and points alerts straight at coding agents
See all Calibre alternatives → · See all Countly alternatives →
Recent activity from Calibre and Countly
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoCalibreChrome 156 & Lighthouse 13.6.0
- 2d agoCountlyCountly Version 24.05.55
- 5d agoCountlyCountly Version 25.03.58
- 7d agoCountlyCountly Version 25.03.57-LTS
- 9d agoCountlyCountly Version 25.03.56-LTS
- 20d agoCountlyCountly Version 25.03.55
- 1mo agoCountlyCountly Version 24.05.54
- 1mo agoCalibreCore Web Vitals Test, now with ad metrics
- 2mo agoCalibreSee the performance impact of every website deployment
- 2mo agoCalibreSynthetic Metrics: All pages, segmented by Test Profile and Deployment
- 3mo agoCalibreMonitor Single Page App performance with soft navigations
- 3mo agoCalibreSynthetic site scan, a new way to import and monitor your site
Frequently asked questions
What is the difference between Calibre and Countly?
They serve adjacent needs but don't currently overlap on shipped themes. Countly is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Calibre better than Countly?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Countly is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Analytics products to evaluate alongside.
What are the best alternatives to Calibre?
Top Calibre alternatives in Analytics are ranked by recent ship velocity. Browse the "Calibre alternatives" section above for the current picks, or visit /alternatives/calibreapp for the full list with editorial commentary on each.
What are the best alternatives to Countly?
Top Countly alternatives in Analytics are ranked by recent ship velocity. Browse the "Countly alternatives" section above for the current picks, or visit /alternatives/countly for the full list with editorial commentary on each.