Another useful utility app, WiFi analyzer is a great little app that helps you decide which channel is best for your WiFi.
From the CNET review “A Wi-Fi channel is a range of radio frequencies that a Wi-Fi network uses to communicate with wireless devices. There are a finite number of accessible channels, so when several Wi-Fi networks occupy a small area, channels will often get overloaded, and that’s bad.” Read more
This app comes in handy when you live in apartment, or when you discover that all of the routers in your workplace are set to the same channel.
Every tech nerd (or person who might be responsive for wireless networks) should have this app.