Friday

Friday plans your route toward streets with more safety infrastructure — 300,000 CCTV cameras, 78,000 emergency bells, 1.5 million street lights and 2,000 police boxes layered on a 110 m grid — switching on automatically after dark. Pick just a time and pace ("50 min, 6:00") and it builds a loop of the right length from where you are. While you run, it guides you by voice at every turn and speaks lines built from your own history: “12 seconds faster than yesterday at this point.” Six voices, Korean or English. Free for 14 days or 5 runs. It can't guarantee lighting or safety — judge dark stretches yourself.