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Fulcrum vs mrbayes

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

Fulcrum vs mrbayes: at a glance

FeatureFulcrummrbayes
SectorAnalyticsAnalytics
Velocity score6.30.0
Sparks · 30d00
Top themesgis, esri-migration, offline-maps, field-data-capturemendelian-randomization, bayesian-inference, stan, jags
Last editorial update9h ago53m ago
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What is Fulcrum?

Fulcrum is betting its whole map stack on Esri, with a hard Google Maps cutoff on September 1.

Fulcrum is a field data collection platform, and nearly every entry in the last month touches mapping. The web app ships weekly fix batches for layer rendering (KML/KMZ, MBTiles, ArcGIS Feature Services), while iOS and Android push near-weekly builds against the ArcGIS SDK. Feature work is thin right now; the visible surface is stabilization around a mapping engine migration already in flight.

Read the full Fulcrum trajectory →

What is mrbayes?

mrbayes spent 2026 auditing its own Bayesian MR estimators for coding errors.

mrbayes wraps Stan and JAGS implementations of Bayesian Mendelian randomization estimators — IVW, MR-Egger, radial Egger, and their multivariable forms. Most of the visible history is packaging work: dependency trimming, conditional examples so the package installs where JAGS will not compile, a maintainer handover. The 0.5.3 release in July 2026 breaks that pattern with a dense list of fixes inside the model code itself.

Read the full mrbayes trajectory →

Fulcrum vs mrbayes: editorial side-by-side

F
Fulcrum
ANALYTICS
6.3

Fulcrum is betting its whole map stack on Esri, with a hard Google Maps cutoff on September 1.

◆ Current state

Fulcrum is a field data collection platform, and nearly every entry in the last month touches mapping. The web app ships weekly fix batches for layer rendering (KML/KMZ, MBTiles, ArcGIS Feature Services), while iOS and Android push near-weekly builds against the ArcGIS SDK. Feature work is thin right now; the visible surface is stabilization around a mapping engine migration already in flight.

◆ Where it's heading

The direction is a full consolidation onto Esri. The legacy Google Maps engine is being retired on September 1 with automatic migration for anyone who hasn't switched, and Esri now carries Google's satellite and street basemaps so the imagery argument is neutralized. Underneath, the mobile SDK moved to ArcGIS 300.0.0 and ONNX on-device inference was dropped for a new INFERENCE format with labels.txt support. Offline is the second thread: downloadable layers can now be updated in place rather than deleted and recreated.

◆ Prediction

Expect the weeks before September 1 to stay dominated by migration-shaped fixes and Esri feature parity work, with the MMPK layer and Photo FastFill early-access programs the most likely to graduate to general availability next.

M
mrbayes
ANALYTICS
0.0

mrbayes spent 2026 auditing its own Bayesian MR estimators for coding errors.

◆ Current state

mrbayes wraps Stan and JAGS implementations of Bayesian Mendelian randomization estimators — IVW, MR-Egger, radial Egger, and their multivariable forms. Most of the visible history is packaging work: dependency trimming, conditional examples so the package installs where JAGS will not compile, a maintainer handover. The 0.5.3 release in July 2026 breaks that pattern with a dense list of fixes inside the model code itself.

◆ Where it's heading

The package has moved from packaging upkeep into a correctness-audit phase. 0.5.3 fixes a hardcoded three-exposure loop in MVMR-Egger reporting, a broken joint-prior branch, a sigma parameterization error in radial Egger, and several prior specifications — the profile of a maintainer reading their own model files closely rather than responding to bug reports. Platform work continues underneath: an R 4.3.0 floor inherited through a transitive dependency chain, and segfault fixes on macOS ARM.

◆ Prediction

Expect further audit-driven patches to the remaining rjags and Stan model files rather than new estimators; the fixes in 0.5.3 cluster in the Egger variants, which suggests that is where the reading is still in progress.

Alternatives to Fulcrum and mrbayes

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 mrbayes.

See all Fulcrum alternatives → · See all mrbayes alternatives →

Recent activity from Fulcrum and mrbayes

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

  1. 18h agoFulcrumWeb fixes: shared-view exports, MBTiles popups, KML and ArcGIS layers
  2. 3d agoFulcrumAndroid: update offline map layers in place, non-blocking Photo FastFill
  3. 4d agoFulcrumiOS fix: slow location resolution blocked record saves
  4. 8d agoFulcrumWeb: SSO email wording and ArcGIS/deck.gl version bumps
  5. 10d agoFulcrumAndroid fixes: ArcGIS stability, signature button, photo markup
  6. 10d agoFulcrumiOS fixes: basemap loading and black map screen
  7. 1mo agomrbayesEstimator audit fixes MVMR-Egger loops and radial Egger sigma
  8. 1y agomrbayesMVMR rjags example gated on rjags being installed
  9. 1y agomrbayesExamples and tests skip when rstan or rjags is missing
  10. 1y agomrbayespkgdown site updated
  11. 1y agomrbayesHelper command added for installing JAGS
  12. 1y agomrbayesDependency surface trimmed; maintainer handover

Frequently asked questions

What is the difference between Fulcrum and mrbayes?

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 mrbayes?

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 mrbayes?

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