My 22 month old took to this one instantly. This is not your fathers shape-sorter! ;) Ive not quite seen any other app like it, and Ive downloaded a ton of them for my toddler. Yes, you need to put the shape in the right hole. But, they throw in decoy shapes that have no holes. They place barriers between the shape and the hole. Its not just shapes that must match, but colours too. Sometimes the shape is underneath something and the child must knock it out first. Other times the shapes are moving and he must catch them before he can deal with it. This truly is a new and innovative take on the old shape sorting game. Rarely has my toddler been so engrossed in an educational game from the moment he started. And, for him, there was on learning curve. He got it immediately - with a little help from mom and dad. I couldnt recommend this one more highly!
...Dale about Busy Shapes, v1.0.3