Frustrating math tool and also never lets student advance – XtraMath Review

I will delete this very frustrating app. It discourages students. I do not think it accurately reflects student’s skill. Not able to advance to next level such as subtraction or multiplication when it says student is at addition level even when student has nearly 100 % accuracy. Some errors are from student accidentally typing incorrect number but there is no way to note this. I agree with other negative reviews. I do not recommend this app.
Review by Guessyoudontwantnegativereview on XtraMath.