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Fulcrum vs lime

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

Fulcrum vs lime: at a glance

FeatureFulcrumlime
SectorAnalyticsAnalytics
Velocity score6.30.0
Sparks · 30d00
Top themesfield-data-collection, esri-arcgis, offline-maps, on-device-inferenceinterpretability, machine-learning, r-stats, maintenance
Last editorial update18h ago1h ago
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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 lime?

lime survives on compatibility patches years after its research moment

lime brings local interpretable model-agnostic explanations to R. Its substantive development finished around 0.5.0 in 2019, which added argument pass-through to predict(), a gower_pow tuning knob and a batch of fixes. Since then there have been three releases: a namespace fix, a maintainer handover to Emil Hvitfeldt with general upkeep, and a patch to work across xgboost versions.

Read the full lime trajectory →

Fulcrum vs lime: 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.

L
lime
ANALYTICS
0.0

lime survives on compatibility patches years after its research moment

◆ Current state

lime brings local interpretable model-agnostic explanations to R. Its substantive development finished around 0.5.0 in 2019, which added argument pass-through to predict(), a gower_pow tuning knob and a batch of fixes. Since then there have been three releases: a namespace fix, a maintainer handover to Emil Hvitfeldt with general upkeep, and a patch to work across xgboost versions.

◆ Where it's heading

The package is in custodial maintenance — kept installable and compatible with the model packages it explains, rather than developed. The 2022 handover is the most consequential entry in the window because it determined that the package would keep getting patches at all.

◆ Prediction

Expect the next release to be another compatibility fix triggered by an upstream model package, not new explanation methods.

Alternatives to Fulcrum and lime

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 lime.

See all Fulcrum alternatives → · See all lime alternatives →

Recent activity from Fulcrum and lime

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

  1. 1d agoFulcrumAndroid: update offline map layers in place, non-blocking Photo FastFill
  2. 2d agoFulcrumiOS fix: slow location resolution blocked record saves
  3. 6d agoFulcrumWeb: SSO email wording and ArcGIS/deck.gl version bumps
  4. 8d agoFulcrumAndroid fixes: ArcGIS stability, signature button, photo markup
  5. 8d agoFulcrumiOS fixes: basemap loading and black map screen
  6. 9d agoFulcrumiOS: ArcGIS SDK 300.0.0 and ONNX replaced by a new INFERENCE format
  7. 8mo agolimeCompatibility across all xgboost versions
  8. 3y agolimeMaintainer handover to Emil Hvitfeldt
  9. 5y agolimeorder() fix and lighter dependencies
  10. 6y agolimeNamespace fix following glmnet changes
  11. 7y agolimeexplain() gains pass-through args and gower_pow tuning
  12. 8y agolimeh2o support, NA handling and date feature types

Frequently asked questions

What is the difference between Fulcrum and lime?

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 lime?

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 lime?

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