I have an old cell phone to use as a close range predator call. Mostly fox, but have seen a coyote on the cameras since february. First time in 10 years. I'm thinking of putting an old cell phone in a rabbit fur hat in the open, setting up on it from a blind or tree stand dawn/dusk (at least until I get set up completely for NV hunting). Is there an app that has a time delay ("lead") before the calling starts, so that I can place the decoy/call, then get set up and wait until the world forgets I'm there before the rabbit squeals start? Any place to find a media file such as this? It's not a full time thing. I don't want the pelts either, just keeping the population down since we have chickens/goats. I've seen predator calls with remote for sale. Just don't want to invest too much into this, although it seems predator hunting could be exciting.