Changes in version 0.2.1 Documentation - ?PhysioAppKit now answers: a package help page gives one paragraph on what the package is for, the main entry points grouped by task, and where to go next. - A vignette carries one task end to end on synthetic or bundled data, offline, and is built and run by R CMD check. - Runnable @examples added or corrected across 11 help pages. Each runs offline in seconds, writes nothing outside tempdir(), and is executed by R CMD check; anything needing a device, a download or an optional backend is fenced with the reason stated. - The README's quick start runs as written: it attaches the package, builds its own inputs, and uses only hard dependencies. Changes in version 0.2.0 Polytomous Rasch measurement for ordinal ADL/IADL, ICF-qualifier and Likert data. - pcm_measure(): Partial Credit (Masters 1982) and Rating Scale (Andrich 1978) models by JMLE, with person/item measures, Andrich thresholds and disordered-threshold detection, infit/outfit, person/item separation reliability and the raw-to-interval ogive (poly_raw_measure()). Reduces exactly to the dichotomous rasch_measure() at two categories. - pcm_dif(): differential item functioning between two groups (logit-contrast t-test, ETS A/B/C bands). - pcm_stack(): concurrent (stacked) calibration so repeated-measure occasions share one item scale, making pre-to-post change interpretable. Changes in version 0.1.0 First public release. Domain-neutral single-case engine for physiological application layers. - nap() / interpret_nap(): Nonoverlap of All Pairs effect size + bands. - nonoverlap_analyze(): single-case A-vs-B analysis (NAP, threshold verdict, decision band), the shared math behind MCID / SWC / SESOI layers. - combine_verdicts(): honest supported / partial / refuted from per-item flags. - phase_plot(): generic single-case phase plot. - rasch_measure() / raw_score_measure(): dependency-free dichotomous Rasch (JMLE) turning ordinal ratings into an interval (logit) scale. - rbind_fill(), first_last(): container utilities.