【實用工具app】Doge Whistle|最夯免費app-綠色工廠好玩App

Dogs have a hearing range up to around 50kHz, whereas humans can only hear up to about 20kHz (and thats only when they're young). Press the doge picture in this app to turn on a high pitched whistle that only a dog can hear.

Use it to train your dog by turning it on whenever your dog does something naughty. It also has lower frequency settings so you can spread the annoying noise love.