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Comparison · Analytics
cfr vs qualtRics
A side-by-side editorial comparison of cfr and qualtRics — release velocity, themes, recent moves, and the top alternatives to consider.
cfr vs qualtRics: at a glance
What is cfr?
cfr packaged delay-corrected severity estimation, then went quiet on maintenance.
The package estimates disease severity and case ascertainment while correcting for the delay between a case being reported and its outcome being known. After the 0.1.1 rework of the estimation internals and a maintainer handover to Adam Kucharski, activity dropped to a vignette and an R-devel compatibility patch in February 2025.
What is qualtRics?
qualtRics moved its contact functions onto XM Directory days before the old endpoints died.
qualtRics is the R client for the Qualtrics v3 API — fetching survey responses, definitions, distributions, and contact lists into tidy data frames. Version 3.3.0 migrated all_mailinglists() and fetch_mailinglist() from the deprecated Research Core Contacts endpoints to XM Directory, ahead of Qualtrics retiring the old ones on June 30, 2026. Authentication and directory discovery are handled automatically, but the new endpoints return a different data shape, so column names changed. Before that, releases had been steady maintenance for two years, mostly around how survey response archives are unpacked.
cfr vs qualtRics: editorial side-by-side
cfr
0.0ANALYTICS
cfr packaged delay-corrected severity estimation, then went quiet on maintenance.
◆ Current state
The package estimates disease severity and case ascertainment while correcting for the delay between a case being reported and its outcome being known. After the 0.1.1 rework of the estimation internals and a maintainer handover to Adam Kucharski, activity dropped to a vignette and an R-devel compatibility patch in February 2025.
◆ Where it's heading
The methodological work is done and consolidated: likelihood approximation is now selected automatically from outbreak size and an initial severity estimate, and the internals were renamed with a dot prefix to close the public surface down to cfr_static(), cfr_rolling() and the data-preparation generic. Releases since have been documentation and compatibility only.
◆ Prediction
The 0.1.0 notes flagged time-varying ascertainment as future work and it has not appeared in the two releases since; nothing in these entries indicates when or whether it lands.
qualtRics
0.0ANALYTICS
qualtRics moved its contact functions onto XM Directory days before the old endpoints died.
◆ Current state
qualtRics is the R client for the Qualtrics v3 API — fetching survey responses, definitions, distributions, and contact lists into tidy data frames. Version 3.3.0 migrated all_mailinglists() and fetch_mailinglist() from the deprecated Research Core Contacts endpoints to XM Directory, ahead of Qualtrics retiring the old ones on June 30, 2026. Authentication and directory discovery are handled automatically, but the new endpoints return a different data shape, so column names changed. Before that, releases had been steady maintenance for two years, mostly around how survey response archives are unpacked.
◆ Where it's heading
This package's roadmap is set by Qualtrics, not by its maintainers, and the release history reads as a sequence of accommodations — endpoint changes, retired APIs, and edge cases in exported files. The team's own recurring theme is reducing surprise: caching was removed from fetch_survey() in 3.2.0 so results are never stale, error handling was standardized on retry semantics, and column mappings were made inspectable via extract_colmap(). Feature additions, when they come, are new endpoints wrapped rather than new abstractions.
◆ Prediction
With the Contacts migration complete, the next likely work is bringing the remaining Research Core-era functions onto XM Directory equivalents before Qualtrics retires more of the old surface.
Alternatives to cfr and qualtRics
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 cfr or qualtRics.
osmextract
osmextract stopped throwing your OpenStreetMap downloads away at the end of every session.
nanoparquet
nanoparquet is chasing byte-level agreement with the Java and Rust Parquet readers, not feature count.
poissonreg
poissonreg gave its models away to parsnip and kept the glue — now it just keeps glmnet honest.
S7
S7 has stopped adding surface and started proving it holds up against R itself.
torchvision
R's torchvision is porting PyTorch's vision stack one task at a time — instance segmentation just landed.
See all cfr alternatives → · See all qualtRics alternatives →
Recent activity from cfr and qualtRics
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1mo agoqualtRicsMailing list functions migrated to the XM Directory API ⚡
- 11mo agoqualtRicsZip extraction handles more special characters in survey titles
- 1y agocfrR-devel difftime patch and an individual-data vignette
- 1y agoqualtRicsFix for questions with both recoded values and variable naming
- 1y agoqualtRicsBuild and CI housekeeping alongside the 3.2.1 release
- 2y agocfrSeverity estimator picks its own likelihood approximation
- 2y agoqualtRicsSurvey response caching removed from fetch_survey()
- 2y agocfrDelay-corrected severity and ascertainment estimation on CRAN ⚡
- 3y agoqualtRicsArgument checking refactor and include_* NA fix
Frequently asked questions
What is the difference between cfr and qualtRics?
They serve adjacent needs but don't currently overlap on shipped themes. cfr and qualtRics are shipping at a similar cadence (velocity 0.0 vs 0.0, 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 cfr better than qualtRics?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. cfr and qualtRics are shipping at a similar cadence (velocity 0.0 vs 0.0, 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 cfr?
Top cfr alternatives in Analytics are ranked by recent ship velocity. Browse the "cfr alternatives" section above for the current picks, or visit /alternatives/cfr for the full list with editorial commentary on each.
What are the best alternatives to qualtRics?
Top qualtRics alternatives in Analytics are ranked by recent ship velocity. Browse the "qualtRics alternatives" section above for the current picks, or visit /alternatives/qualtrics for the full list with editorial commentary on each.