Direct-labeled chart contract
Divergence view / data collection in progress
The production chart will label values at the mark. This preview contains no invented measurements.
Interpretation rule: bar lengths are visual calibration only and do not encode product performance.
Study status / published
The evidence, calculations, and downloads are live
The published report compares the same 50 supplied keyword inputs across eRank, EverBee, Alura, and Sale Samurai using 200 verbatim observations collected during a single 48-hour window on 2026-07-14/15.
The median highest-to-lowest reported search-volume spread is 137×. That finding measures disagreement among proprietary estimates; it does not identify marketplace truth or prove that any tool is accurate.
Metric design
Disagreement needs a definition readers can reproduce
The report documents its ratio calculation beside the chart, including treatment of zeros, reporting floors, missing values, and K/M-rounded values. The unmodified source values remain downloadable.
A high divergence score signals disagreement, not that any one tool is wrong. Trust recommendations require method disclosure and use-case analysis beyond the score itself.
- C-01
- Divergence formula
- C-02
- Missing-value policy
- C-03
- Normalization rules
Sortable record
Every chart resolves to a row
The table supports sorting by keyword and divergence status, direct anchor links, and compact mobile records. Source, collection date, and tool-plan context travel with every view.
The dataset import contract rejects unlabeled units and missing provenance before a record can become indexable.
Citation
Stable URL, versioned date, plain-text citation
The report exposes a stable canonical URL, a dated record, per-chart anchors, complete CSV downloads, and copyable citation text. Future revisions must retain versioned metadata so references do not silently change.
The published citation identifies the Research Desk, report title, publication date, canonical URL, and dataset method without implying an individual author persona.
Research status
Open testing items
These open items explain why the page remains outside search indexing and which evidence is still being collected.