Easy Raccoon and Opossum Whistle
Easy Raccoon And Opossum Whistle is a fast and free app to generate sounds raccoons and opossums can hear. Use this to train your animals…. maybe. You can also use it as a frequency generator.
You can download it from the Android market here.
Update 4/2012 This is now open source and hosted on GitHub. Check it out at my GitHub page.