Smart Ranch is a game that I developed in 2014 for Virtuosity. This game was initially developed for Blackberry. In this game, kids are encouraged to help Grandpa maintain his barn by solving basic puzzles. My responsibility in this project is to rewrite the entire game to Android. There is some difference between Blackberry and Android that need to be considered. There is no physical keyboard on typical Android smartphones. Thus, I need to redesign the input mechanism. I implement handwriting recognition for numerical input. This utilizes android touch screen for a more intuitive input. Besides solving the puzzle, kids learn how to write numbers.