The application includes an AirPort plugin showing more accurate information like dBm values.
Use WiFi Explorer for wifi analysis. Detect issues that may be affecting connection and the performance of your network, such as channel conflicts, overlapping and configuration issues, etc. This app can also help discover open, ad-hoc and rogue access points. WiFi Explorer detects 802.11a/b/g/n/ac wireless networks, works with 2.4 and 5GHz channel bands, and 20, 40, 80 and 160 MHz channels.