HabitPair is a deliberately simple habit tracker for building habits and breaking unwanted ones. Instead of only counting streaks, it maps every mark against weekdays, months, and years so recurring weak spots become visible. Each habit includes current and best streaks, 30-day consistency, all-time completion, full calendar history, and ranked best streaks. It is free, private by default, ad-free, works across devices, and avoids nagging notifications.