Bird Collections Puzzle (iphone & ipad)

We are developing a children application and would need a developer to assists with the programming. ‘Birds Collection Puzzle’ is a simple application targeted towards children from 1 year onwards. Each screen will display a different type of bird puzzle. Users may drag and drop the puzzle piece into a silhouette of the bird given. Upon completing, screen will display the completed image with an applause sound. The next screen will display the fact of the bird and the real image of the bird. When the user tap on the real image of the bird (which will be small), the big image will pop out. Images and sounds will be provided for this application. Developer must have experience in successful application development and in particular, in app purchase functionality. You will also be required to test the application aggressively for bugs and be responsible for any updates due to programming error if required. I will keep 20% of the payment in milestone upon successful publishing of the app for a period of 14 days to ensure that the app is free of programming bugs. Please submit your best 3 apps that you have developed for consideration. We need for both iphone and ipad.