iPhone App for translating baby's cries?

I'm sure something like this would work, 90-95% of the time (and sometimes be mistaken) or with 90-95% of babies (but it just doesn't work with other babies).

But I would say for the most part something like this would totally work. I have read the studies on baby cries, and it's pretty much proven that they have meaning; distinction sound and tonality. But from baby to baby it might be slightly different (but more similar than you might even think, hence the app!).