I've always wanted to play the piano, but my biggest issue is finger dexterity and postion training. Could there be a mode where it isn't about playing the next

I've always wanted to play the piano, but my biggest issue is finger dexterity and postion training. Could there be a mode where it isn't about playing the next note, but simply about getting your fingers into the proper positions to play a note/chord? A phone might be too small to detect a hand, but an iPad could work. If someone could repetitively train their hands to the shape, perhaps that could be a real beginner mode?