I love the Sago Mini apps for how child-directed they are. They are adorable, humorous and responsive. This has been one of my sons favorites since he was 10 months and is perfect for babies who are into "smooshing" their fingers on the ipad. Every touch triggers a reaction, whether it is a star in the sky or a fish leaping out of the sea, and many touches make many things happen! Also there is a sort of story (an interesting journey) which holds the attention better (for a while anyway). Best of all, the sound effects are harmonized so it all sounds good and recognizable as part of the song. Much better than sound box or the fisher price apps. This is possibly the best baby app on the market.