Are there any iPhone push apps that sound on silent? Are there any iPhone push apps that will still sound when the phone is set to silent/vibrate?

I've tried Prowl but it gets silenced. I'd like to have a way to find my phone more easily when I can't find it and it's on silent, and if I can send it a push notify that always sound it will solve my problem.
Yes - Apple's find my iPhone app / service will sound the device despite mute, volume and do-not-disturb settings.