OpenPanel
OpenPanel ships 3.1.0 and 3.1.1 within a day of 3.0, all supporter-first builds with no notes.
Comparison · Analytics
Calibre vs Fulcrum
A side-by-side editorial comparison of Calibre and Fulcrum — release velocity, themes, recent moves, and the top alternatives to consider.
Calibre vs Fulcrum: at a glance
| Feature | Calibre | Fulcrum |
|---|---|---|
| Sector | Analytics | Analytics |
| Velocity score | 5.0 | 5.0 |
| Sparks · 30d | 0 | 0 |
| Top themes | web-performance, rum, deployment-attribution, core-web-vitals | field-data-collection, photo-fastfill, mobile, gis |
| Last editorial update | 1mo ago | 1d ago |
| Website | Visit → | — |
What is Calibre?
Calibre is tying every performance number back to the deploy that caused it.
The August release brings deployments into Real User Monitoring: deploy markers run along the bottom of charts, hovering one reveals the commit, author, and time, and clicking through opens the commit in source control, with each deployment compared against the previous. The same day, Synthetic metrics moved from one page at a time to median aggregates across all pages, segmented by test profile, deployment, and page — so a regression can be identified as site-wide or isolated. Before that: automatic measurement of soft navigations in single-page apps, a site-scan crawler that discovers and maintains the monitored page list on its own, self-service SAML SSO with SCIM on the Team plan, and an organisation-wide audit log that exports as NDJSON or streams to a SIEM over signed webhooks.
What is Fulcrum?
Fulcrum gives admins one FastFill Settings panel while Photo FastFill stays in Alpha.
Fulcrum's recent releases are mostly fixes across iOS, Android and web. The latest web release adds a consolidated FastFill Settings section in the App Builder for Photo FastFill alpha testers, where admins pick which photo fields it runs on, which fields it fills and whether Audio FastFill is on. The 2610.0.0 mobile builds repaired offline ArcGIS layer downloads and the external GPS flow.
Calibre vs Fulcrum: editorial side-by-side
Calibre
5.0ANALYTICS
Calibre is tying every performance number back to the deploy that caused it.
◆ Current state
The August release brings deployments into Real User Monitoring: deploy markers run along the bottom of charts, hovering one reveals the commit, author, and time, and clicking through opens the commit in source control, with each deployment compared against the previous. The same day, Synthetic metrics moved from one page at a time to median aggregates across all pages, segmented by test profile, deployment, and page — so a regression can be identified as site-wide or isolated. Before that: automatic measurement of soft navigations in single-page apps, a site-scan crawler that discovers and maintains the monitored page list on its own, self-service SAML SSO with SCIM on the Team plan, and an organisation-wide audit log that exports as NDJSON or streams to a SIEM over signed webhooks.
◆ Where it's heading
Calibre is closing the loop between a metric moving and someone knowing why. Deployment attribution supplies the cause, the all-pages segmentation supplies the scope, and soft-navigation measurement fills the blind spot that made SPA numbers untrustworthy in the first place. Running alongside that is a distinctly enterprise track — SSO, SCIM, and an audit log with SIEM streaming are procurement requirements, and putting SAML on the Team plan rather than reserving it for Company is a deliberate move down-market with them.
◆ Prediction
Expect deployment attribution to grow into alerting — a regression tied to a specific commit is the natural trigger for a notification, and the pieces are now all in place. How far the site-scan crawler is meant to replace manual page management is not yet clear from these entries.
Fulcrum
5.0ANALYTICS
Fulcrum gives admins one FastFill Settings panel while Photo FastFill stays in Alpha.
◆ Current state
Fulcrum's recent releases are mostly fixes across iOS, Android and web. The latest web release adds a consolidated FastFill Settings section in the App Builder for Photo FastFill alpha testers, where admins pick which photo fields it runs on, which fields it fills and whether Audio FastFill is on. The 2610.0.0 mobile builds repaired offline ArcGIS layer downloads and the external GPS flow.
◆ Where it's heading
Photo FastFill keeps gaining controls release after release, first user-side photo selection on mobile and now admin-side configuration per app, which is the kind of scaffolding a feature gets before leaving Alpha. Repeated external GPS and offline-map work points to continued investment in high-precision field deployments with poor connectivity.
◆ Prediction
The likeliest next notable release is Photo FastFill moving from Alpha to a broader beta, now that it has admin configuration. The entries give no timing.
Alternatives to Calibre and Fulcrum
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 Fulcrum.
OpenHouse
OpenHouse starts simplifying replication by making its catalog, not Iceberg metadata, the source.
Basedash
Basedash adds view-only seats so whole departments can read dashboards without editing.
OpenReplay
OpenReplay adds offline license tokens so air-gapped installs can run licensed.
Tinybird
Tinybird switches off Classic for Free and Developer plans, leaving Forward as the only path.
OpenCTI
OpenCTI's weekly train now merges entities in the knowledge view and reads defanged IOCs.
See all Calibre alternatives → · See all Fulcrum alternatives →
Recent activity from Calibre and Fulcrum
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoFulcrumWeb: FastFill Settings panel for admins, Data Viewer fixes
- 3d agoFulcrumiOS Release - 2610.0.0
- 3d agoFulcrumAndroid Release - 2610.0.0
- 9d agoFulcrumWeb fixes: exporter timezone bug, Audio FastFill kept on duplicate
- 9d agoFulcrumiOS: pick which photos Photo FastFill extracts from
- 10d agoFulcrumAndroid: pick which photos Photo FastFill extracts from
- 1mo agoCalibreSynthetic Metrics: All pages, segmented by Test Profile and Deployment
- 1mo agoCalibreSee the performance impact of every website deployment
- 2mo agoCalibreMonitor Single Page App performance with soft navigations
- 3mo agoCalibreSynthetic site scan, a new way to import and monitor your site
- 3mo agoCalibreSelf-service SAML Single Sign-On, now available on the Team plan
- 3mo agoCalibreAudit log: a complete record of security and admin activity
Frequently asked questions
What is the difference between Calibre and Fulcrum?
They serve adjacent needs but don't currently overlap on shipped themes. Calibre and Fulcrum are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Calibre better than Fulcrum?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Calibre and Fulcrum are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). 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 Fulcrum?
Top Fulcrum alternatives in Analytics are ranked by recent ship velocity. Browse the "Fulcrum alternatives" section above for the current picks, or visit /alternatives/fulcrum for the full list with editorial commentary on each.