We also downloaded animal noises. She likes this one when she plays with the speech therapist. Ours is a little different, but it's neat because it's also in Spanish. Brian and I are trying to learn/perfect our Spanish, but we also think it'd be neat if Sadie was bilingual. Her favorite so far is the rattle snake (Serpiente de Cascabel) because it makes a really fun noise. She also likes the gatitos (kittens) because that noise is familiar to her. It's pretty fun to watch her sometimes listen, sometimes try to look, and other times she wants to touch.
We have some other apps that we want to work more and more with, one is about shapes, another is fruits. We have another that when you touch, shapes accompanied by noises appear, so it's good instant gratification to reinforce cause and effect and hopefully get her reaching out and touching more. Unfortunately teething has been awful these last few days, so I don't have many pictures or video to show you yet, but there will be plenty to come.
For now, here's a picture of Sadie enjoying a quick podcast of Sesame Street. Enjoy!