It is the apps for training of Flash Mental Arithmetic.
Since Indication time and Interval can be set up finely in addition to Numbers and The number of the figures, it can train by various patterns.
By the fastest, a number can be displayed on 0.08 second at 1 time of speed.
[Setting Range]
Number count : 2 - 50
Digit number : 1 - 6 (The number of the figures)
Indication time : 0.04 - 1.0 (sec)
Interval : 0.04 - 1.0 (sec)