Cohort Retention Visualizer

Paste one cohort (e.g. a month) per line with its period-by-period user counts; see retention percentages as a heatmap and an average curve.

Cohort Data (cohort_label, period0_count, period1_count, ...)

Each line: "Cohort Label, Period0 Count, Period1 Count, ...". Period 0 is the baseline (100%); later periods are shown as a percentage of it.