Satsu-chika is a free smartphone App providing information on the underground system and surroundings in central Sapporo.
Weather function to check the weather conditions in Chuo-ku, Sapporo, while underground
Event function to check events in the Sapporo Ekimae-dori Underground Walkway (Chi-Ka-Ho)
Subway Timetable function to check the subway timetable of the Sapporo City Transportation Bureau, and the most convenient boarding time based on your underground position at the time
Coupon function to receive discount and other useful coupons for restaurants and other shops
Facility Information function to check the locations of nearby elevators and (multi-purpose) restrooms