The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Timeless Life Skills:
Hey chaps! EcoTrail is a little charming story that has an universal appeal.Its about a little bird named as "Birdee" who has a jot of comprehension about human ecology but not much."Birdee" is in search of a juicy, crispy and sweet-tart fleshy apple but there are few obstacles on her way."Birdee" has to answer some questions which are related to human ecology. The correct answers reduces the distancebetween "Birdee" and apple and wrong answers trails her down and make her bit far from apple.So champ! you need to help "Birdee" to reduce her agony and let her eat that red apple after all you have to keep thisin mind that your "Birdee" is quite hungry.BEST OF LUCK!