So, I thought I was done with the whistles for a while, but a friend of mine asked for one more. And who am I to say no to one more app 🙂 Easy Cow and Chicken Whistle is a fast and free app to generate sounds your cows and chickens can hear. Use this to train your farm animals…. maybe. You can also use it as a frequency generator. You can view the permalink page for it here, or download it from the Android marketplace here.