DO NOT BUY – FingerMath ABACUS - addition,subtraction Review

This app will make you reauthorize your purchase every level. Every. Single. Time. Every. Single. Level. Even. If. You. Already. Finished. It. Unless you want to reenter your password every time you play, you shouldn't buy it.
Review by Kjnto on FingerMath ABACUS - addition,subtraction.