This week in apps features Curious George at the Zoo, which is available for free until May 1. Also this week is Press Here: The App, based on Hervé Tullet's bestselling picture book, which features 15 simple games. Over in the Ocean is an app designed to teach children about marine life using a unique polymer clay art style. Finally, Boats is the latest Byron Barton app, teaching children about many different types of boats.

Title: Curious George at the Zoo

Publisher: Houghton Mifflin Harcourt

Release date: April 12, 2012

Price: Free (until May 1)

Background: George has been asked to help out at the zoo. He needs your child's help to wake, clean and feed the animals.

Features: Visit animals in their individual zoo enclosures, explore the zoo using an interactive 3D pop-up menu, collect stickers for completing tasks, watch movies of each animal in its natural habitat, games for memory, sorting, and reasoning.

Title: Press Here: The App

Publisher: Chronicle Books

Release date: April 11, 2012

Price: $1.99

Background: An array of simple games based on Hervé Tullet's bestselling book from 2011.

Features: 15 simple games including: Are You Coming? (drag the dots into each other and try to combine them), Free Play, Get Inside (try to get the little dot into the big circle), and Inside Goal (play tabletop hockey with dots).

Title: Over in the Ocean: In a Coral Reef

Publisher: Dawn Publications

Release date: March 14, 2012

Price: $2.99

Background: Children count, poke, and jiggle the ocean animal babies to watch them graze, skitter, dart and more, and then find all the babies in a counting game.

Features: Artwork constructed from polymer clay, read to me, read to myself, and sing to me modes, real photographs of each animal with interesting facts.

Title: Boats - Byron Barton

Publisher: Oceanhouse Media

Release date: April 7, 2012

Price: $0.99

Background: Children can interact with many different types of boats, including rowboats, ferryboats, fishing boats.

Features: Read to me, read it myself, and auto play modes. Professional narration, words highlight and are read aloud when tapped.