Works when you speak English?
First: build-in sounds really get my cats attention. But I really have no idea what mean those icons and those sounds. Im not English native speaker (my cat isnt also). So I give my commands in Polish. I dont know what this app can translate from Polish :)
So Im afraid it only works when you speak English :(. It could be much more useful to assign typical commands to icons. Then you will only have to press proper button to "say" something to your cat.
Testdrived about
Human-to-Cat Translator, v1.0