This app produces 12 predator call sounds for the avid hunter. Comes with Coyote Sounds, Prey Animal Sounds and a Siren Locator. Also comes with a Coyote Hunting Beginners Guide. Just plug in your amplified speaker and happy hunting! For even better results…use a Bluetooth speaker. Great for any predator, fox, lynx, bobcat or coyote. *All Sound Files Are Open Source Files*