IPhone apps for kids?

[laalala]

Anyone know of any good iPhone apps for kids that are somewhat educational?

How old?

My 2 year old DS loves Phone4Kids - there's a free version, and I then paid to upgrade.

He also likes puzzle matching apps - there are loads!

He's 2 years old. I tried looking at some nursery rhyme ones but they all seemed a bit naff and then you have to pay after the first song or something. I'll have a look at that one thanks.

DD loves the fisher price ones, we have just about the full 'toddler teasers' one but of course her favourite is bloody tap the frog

Maybe a bit young for yours ATM but my ds loves the phonics app and has learned loads from it (he's 3)