While the drawings are quite sweet, I feel the zoo animal sounds are not endearing but rather a tad intimidating for small children. Also, when advancing to the next peekaboo hidden animal, I'm nauseous from the side-swish, leaf-shake animation (and I am not one who suffers motion-sickness or cannot stomach spinning rides.)
Lastly, this app is barely interactive. Some of your others are much MORE touch-and-learn (Peekaboo Ocean, ABC First Steps Letters & Sounds) while others are not (Peekaboo Zoo and Peekaboo Vehicles.) However, my 16 month-old enjoys your vehicles app very much. As an American, the UK voice option your programs provide is beyond endearing. I hope my son's 1st word is "aeroplane!"