Lol I read some of the reviews, just because YOUR cat may not come doesn’t mean the app isn’t worth 5 stars. The point of the app is to TRAIN your cat, not work magic & expect your cat to “just know” the whistle means to come. You have to use the whistle & teach it to come at the same time..so the cat recognizes the whistle once trained..by the phone holder. All pitches have their benefits. Thank you, I needed it bc my cat ran away & since the one pitch causes cats to freeze w/o training, I was able to grab her. Thank you!