Educational Wooden Puzzle Collection is a nice collection of wooden puzzles for toddler through kindergarteners. While the price may seem high it is actually a good value considering the number of puzzles and features it contains.
Happy Little Farmer is a nicely designed science app to teach young kids the life cycle of plants using three different scenarios. A few changes could be made in how things are depicted or how kids interactive with them, but the app is still recommended.
Toddler’s Seek & Find: At the Circus is an engaging seek and find app for toddlers and preschoolers; beautifully hand-drawn illustrations and an incredible amount of interactive objects. One scene is free with the initial download; two more available with an in-app purchase.