This is application of brain training that you touch the falling number in order from 1.
1,2,3,...,8,9,1,2,...
you touch the number from 1 to 9 in order.
This application has two modes.
①30 seconds mode:
Compete your touch count in 30 seconds.
②3 set mode:
Compete for the time that you take to touch the number by 3 set with 1 to 9.