isTree app for iPhone and iPad
>Build your colorful tree, and show it to your friends!
>The bigger the tree is, the more colorful it will be, and no tree will be the same.
>Your score can multiply by heart numbers. Connect the joint, find and get the heart.
>When your tree is bigger and bigger, find next heart will be much more fun.
>How much score will you get? See you on the leaderboard.