We love this, it is simple yet open ended enough to be intriguing to to my students as well. It is even fun just as a reward for kids who are past learning cause/effect- they enjoy drawing and exploring the different sounds and colors. For the user who keeps swiping out of the app, go into your iPad settings, go to General, then turn off Multitasking Gestures (have experienced the same issue in the past!) one request- I would love to make the sound effect for the yellow color more quiet, it is more jarring than the rest. Music mode is our favorite!