The warden wifi is most to help among the other work people,i try this app
Wifi Analyzer - Wifi Analyzer is a handy tool which helps you to select a better channel for your wireless router.
NetSpot - NetSpot is a free app for wireless site surveys, Wi-Fi analysis, and troubleshooting
inSSIDer - inSSIDer Essential makes it easy to maintain small business WiFi.
Wifiner - WiFi Analyzer - WiFi Analyzer. See your WiFi signal on a visually comprehensive map and make sure you are getting the best of your network
Vistumbler - Vistumbler is a wireless network scanner for Windows Vista and Windows 7. Features:
TP-Link Tether - Easy Network Management At Your Fingertips!