Froze every single time

This app seemed good but literally the first time using it froze on me, reset phone to break freeze the played again this time at 0 lp it froze again, have it another shot and same exactly thing but thing time I deleted the app, bad experience and waste of $1, Ill stick to paper and a regular calc.

Rassouljah about Duel Calc for Yu-Gi-Oh!, v1.0.2