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Fulcrum vs tsibble

A side-by-side editorial comparison of Fulcrum and tsibble — release velocity, themes, recent moves, and the top alternatives to consider.

Fulcrum vs tsibble: at a glance

FeatureFulcrumtsibble
SectorAnalyticsAnalytics
Velocity score6.30.0
Sparks · 30d00
Top themesfield-data-collection, esri-arcgis, offline-maps, on-device-inferencetime-series, data-structures, vctrs, tidyverts
Last editorial update15h ago48m ago
WebsiteVisit →

What is Fulcrum?

Fulcrum's mobile train is all Esri migration cleanup, with on-device inference quietly changing format.

Fulcrum ships iOS, Android, and web releases on a near-weekly cadence, and this stretch is dominated by mapping work following the Google Maps retirement announced for September. Recent builds upgraded to ArcGIS SDK 300.0.0, moved the web map engine to current ArcGIS and deck.gl versions, and worked through the resulting stability issues — basemap loading, location resolution, black map screens, panning and zooming performance. The most consequential change is easy to miss: ONNX support for on-device machine learning inference was removed in favor of a new INFERENCE format that reads labels from an uploaded labels.txt.

Read the full Fulcrum trajectory →

What is tsibble?

tsibble shipped one release in five and a half years - the data structure is finished

tsibble defines the tidy time-series data structure that fable and feasts are built on. The design churned heavily through 2018 and 2019, settled with the 0.9.0 move onto vctrs in mid-2020, and then went quiet: the next release, 1.2.0, arrived in February 2026 with a summary() method and some tidyselect helpers.

Read the full tsibble trajectory →

Fulcrum vs tsibble: editorial side-by-side

F
Fulcrum
ANALYTICS
6.3

Fulcrum's mobile train is all Esri migration cleanup, with on-device inference quietly changing format.

◆ Current state

Fulcrum ships iOS, Android, and web releases on a near-weekly cadence, and this stretch is dominated by mapping work following the Google Maps retirement announced for September. Recent builds upgraded to ArcGIS SDK 300.0.0, moved the web map engine to current ArcGIS and deck.gl versions, and worked through the resulting stability issues — basemap loading, location resolution, black map screens, panning and zooming performance. The most consequential change is easy to miss: ONNX support for on-device machine learning inference was removed in favor of a new INFERENCE format that reads labels from an uploaded labels.txt.

◆ Where it's heading

This is a platform consolidation being paid down one point release at a time. Having committed to Esri, Fulcrum is absorbing the instability that came with it, and each release reads as fixes to symptoms of the same migration. Underneath, the offline and field-capture story continues to get real attention — downloaded offline map layers can now be updated in place, and Photo FastFill moved to background processing so it no longer blocks editing.

◆ Prediction

Expect the release notes to stay fix-dominated through the September Google Maps cutoff, with the migration-related map defects tapering after it passes. Photo FastFill leaving early access is the most likely next substantive item.

T
tsibble
ANALYTICS
0.0

tsibble shipped one release in five and a half years - the data structure is finished

◆ Current state

tsibble defines the tidy time-series data structure that fable and feasts are built on. The design churned heavily through 2018 and 2019, settled with the 0.9.0 move onto vctrs in mid-2020, and then went quiet: the next release, 1.2.0, arrived in February 2026 with a summary() method and some tidyselect helpers.

◆ Where it's heading

This is a package that reached its final shape and stopped. The early releases are a rapid sequence of breaking changes to the key and interval metadata, each one warning that previously stored objects are corrupt; once the interval became a formal vctrs record type there was nothing structural left to change. The five-year gap is the trajectory, not a lapse.

◆ Prediction

Expect further releases to be small compatibility and convenience additions at long intervals; with the type system settled and windowing delegated to slider, there is no visible pressure for another breaking change.

Alternatives to Fulcrum and tsibble

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 Fulcrum or tsibble.

See all Fulcrum alternatives → · See all tsibble alternatives →

Recent activity from Fulcrum and tsibble

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 23h agoFulcrumAndroid: update offline map layers in place, non-blocking Photo FastFill
  2. 1d agoFulcrumiOS fix: slow location resolution blocked record saves
  3. 6d agoFulcrumWeb: SSO email wording and ArcGIS/deck.gl version bumps
  4. 7d agoFulcrumAndroid fixes: ArcGIS stability, signature button, photo markup
  5. 7d agoFulcrumiOS fixes: basemap loading and black map screen
  6. 8d agoFulcrumiOS: ArcGIS SDK 300.0.0 and ONNX replaced by a new INFERENCE format
  7. 6mo agotsibblesummary() for time classes; sequential column construction
  8. 6y agotsibbleInterval becomes a vctrs record type; windowing moves to slider
  9. 7y agotsibbleLifecycle badges and yearweek string parsing
  10. 7y agotsibblePatch fixes for renaming, single-row and duplicate-index cases
  11. 7y agotsibbleindex_by() groups the index; unnest_tsibble() added
  12. 7y agotsibbleMetadata overhaul folds regular into interval, ordered into index

Frequently asked questions

What is the difference between Fulcrum and tsibble?

They serve adjacent needs but don't currently overlap on shipped themes. Fulcrum is currently shipping more aggressively (velocity 6.3 vs 0.0), 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 Fulcrum better than tsibble?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Fulcrum is currently shipping more aggressively (velocity 6.3 vs 0.0), 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 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.

What are the best alternatives to tsibble?

Top tsibble alternatives in Analytics are ranked by recent ship velocity. Browse the "tsibble alternatives" section above for the current picks, or visit /alternatives/tsibble for the full list with editorial commentary on each.