iTop turns your phone's real sensors into a live world championship. Your altitude, speed, distance, weather and workouts compete for 90+ live world titles — highest, fastest, most countries, seven summits, even "first phone in orbit." Titles change hands in real time: beat someone and it's yours; get beaten and you're notified. First to claim a title gets gold. No fake scores — real data only. Personal stats and badges are free; premium unlocks the global race.