Luach is a comprehensive Halachic monthly calendar application designed for Jewish women, aiding in the observance of laws related to Niddah. It assists in tracking personal dates, prohibition times, Mikvah scheduling, and other essential observances. The app facilitates the scheduling of system reminders for various rituals like Hefsek Tarahas, Bedikahs, and Mikvah visits.

Moreover, Luach conducts a thorough Halachic analysis, automatically calculating patterns and problematic dates that need to be observed, accommodating various Halachic opinions. It also functions as a Zmanim calendar, providing daily Zmanim, candle-lighting times, sedra of the week, holidays, and more, alongside an event manager for special dates and appointments.