Deer Grunt and Bleat Call

Downloaded, installed, no problems. 1st time I tried this app, a doe and two "skippers" came flying down the hill, through the woods, to about 15 feet from me, stopped, sniffed and looked around until they finally spotted me leaned up against a tree, then trotted back up the hill. Just at dusk, 3 minutes before the end of legal shooting for the day, the "Buck Bawl" brought a buck about 50 yards from me, but behind a thick hemlock. I saw horn but no clear shot. I'd have worked a few other calls but it was too late or cutting the thin edge, no clear shot and I won't shoot without a clear kill shot and sure it is still legal shooting. I'd not even thought about using the app on the phone as an illegal electronic call. Just had not crossed my mind as it was not some device I went and bought to "call in" deer (sorry for the pun). I told a friend about it and he told me it was considered an illegal electronic call in my state. Oh well, I have not used it again, but can attest that it really works, even at the volume of my cell phone that was not even turned on its highest volume. If legal in your state/locale, you won't be disappointed. I will use where legal.

The app went blank as soon as I clicked on deer calls

Won't download