Use APKPure App
Get Speedmeter GPS Earth Rotation old version APK for Android
이 새로운 도구는 현재 위치에서 지구 회전 속도를 표시합니다
With this app you can see the velocity of the earth rotation depending of the latidude of your current location on the globe. This value varies from 0 at the north or south pole to around 1700 km/h
if you are at the earth equator.