This app is called Christmas Rush, and it's a pretty simple game. In it, you'll be controlling a character called Santa Claus, who is going to visit all the houses in the world and deliver gifts. The only problem is that there are a lot of things in the way, and if Santa hits them, he'll lose a part of his speed. You'll have to use your keyboard to navigate and collect gifts along your way. You also have to make sure to avoid obstacles so you can help Santa Claus deliver gifts quickly.