The devastation of Hurricane Harvey and Hurricane Irma has pulled walkie-talkie apps into the spotlight as an effective, quick way to communicate during an emergency. PC Mike Wendland has details on three you might want to consider downloading so you can be prepared, too. The Zello app has been cited specifically as a “life-saver” in recent days. The app is well-designed, simple, and doesn’t have any annoying ads. Zello lets users create groups that can include literally hundreds of family, friends, or collaborators. It allows you to see who’s available or busy. You can also send photos. The app is free for iOS and Android. Voxer offers a few more…