Contact us

HuoMu Ltd.

Room 236, Hongzheng Building, No. 200, Zhongshan North Road, Gulou District, Nanjing, China

https://play.google.com/store/apps/details?id=com.dotnbeat.dancing.music.rhythm.handspeed
https://itunes.apple.com/us/app/dot-n-beat-test-hand-speed/id1454192499