All three calculators are 100% client-side, mobile-first, and Adsterra-safe. They share cross-tool constants (shift duration 180s, Cash Potion 1.5x, Luck Potion 0.10 walkout delta) so a player can re-run any tool after upgrading furniture without drift between calculators.
Star-rating and walkout probabilities are [INFERRED-FROM-MECHANICS] until the developer publishes the five-star formula. Tool pages carry this caveat in the warnings panel.