App: Wiag - Wifi Diagnostic Utility
Developer: Jonathan Kelley
Genres: Utilities, Developer Tools

Simple utility to show all available wireless access points. For the connected access point further details and graphs are available. 

Graphs tab shows the real time measurements for noise, signal strength and computed quality.

Note: Location Services is required in order for the Current Network and Charts to be functional. Follow these steps to enable it on your system:
1) Open System Preferences
2) Select Security & Privacy
3) Select Location Services 
4) Toggle the checkbox for "Enable Location Services" so it is on

Release notes:
Upgrades to charts library and raised deployment target version.