A “guu paa” will be performed in many cases, when deciding a partner in the doubles game of tennis.
4 persons take one of paa(paper) or guu(rock).
A partner will be made if 2 person took out guu, and the other person took out the paa at a time.
Although it is such an easy thing, isn’t it decided even if it repeats how many times occasionally?
Then, it is this application that can be decided a partner using iPhone enjoying and simply.
4 persons do the tap of 4 on the illustration of a tennis court, respectively.
The sound which instigates a feeling of tension for four persons to do a tap flows.
And announcement of a result! separating in the pair which took out guu(rock) and took out the paa(paper) — now, it is the start of a tennis doubles game.
When carrying out a “guu paa” once again, let’s shake iPhone and carry out a tap by four persons once again.
Probably, also in tennis training, it is found useful in the partner arrangement of doubles game practice other than the tennis in a colleague, a tennis team, and a tennis club.