My 21month old and 3 year old both adore this app, and it has saved many, many trips to restaurants from turning into a disaster while waiting for food. Its very well put together and my 3 year old even found an easter egg within the app (create a monster using the items shown on the loading screen, and new stuff happens). The update is great, as the Christmas one was wearing a bit thin. HIGHLY recommended - there is a lot of thought and care put into this app and $4 seems nothing for the amount of use this app gets.
This, Talking Carl, Rabbid Rabbits and Dora keep the girls happy for waaay longer than any colouring book in a restaurant.
scribblenik about Elmo's Monster Maker, v1.6