My nephew likes play Peekaboo Barn. Its a game where you have to guess the animal based on the sounds.
Balloonimals isn't bad either.http://www.peekaboobarn.com/
There are approx. 600,000+ applications available at Apple App Store for iPhone as well as iPad devices. These wide range of applications are available for people of all age groups, including kids aged 3-5. Developers have created many apps; some of them are Lego Duplo Jams, Bubble Snap, Toca Train, Five Little Monkeys Collection, Green Eggs and Ham, Kids Doddle, Letters A to Z and many more.