Perfectly Simple
I found this app when desperately looking for something to soothe my twin boys when they were around 6 months old. They instantly were mesmerized by it! They’re now 2 and I STILL have it as my go-to when I need to soothe/distract them. I like that the graphics keep their attention and the music changes tempo enough to keep it interesting for them, and it being classical makes it all the better!