Some big developmental flaws

This app was recommended by my 8yos piano teacher. I could be great, but he was quickly frustrated with it. The cheering when he gets a correct answer is good, but does there really have to be a loud "awwww!" or, even worse, "booooo!" for a wrong answer?

Also, the letter choices are in a font that can be confusing for young children: namely the D can be easily confused with a lowercase A, flipped right to left (but that is lost on many children at this age). Simple block letters would be a more appropriate choice.

Once we straightened out which letter was which and turned the sound off, it went better, but that was rather too late.

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