Calvinmilk

Calvinmilk is a professional iOS tool designed for ranch managers and dairy consultants, which uses data to reveal how calving season affects herd lactation performance. The application groups cows by calving in spring, summer, autumn, and winter, automatically summarizes the 305 day milk production of each cow, and supports filtering by parity, search sorting, and CSV batch import. The analysis module provides multiple seasonal grouping methods and significance tests such as ANOVA, Welch, Kruskal Wallis, and Cohen's d effect measures; The lactation curve page can compare the average milk production trajectory, peak, and persistence from 1 to 305 days. The loss calculation page quantifies the yield gap and economic losses between different calving seasons, and provides suggestions for adjusting breeding plans and alleviating heat stress.