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To download WiFi Signal from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.

WiFi Signal

By Adrian Granados

Open the Mac App Store to buy and download apps.


Monitor and troubleshoot the quality of your Wi-Fi connection.

WiFi Signal is a system menu bar application that provides easy access to your Wi-Fi connection details (name, channel, transmit rate, signal strength, noise, etc.), monitors the signal quality of your wireless network, and can find and recommend alternative channels for your network thus avoiding signal overlapping and channel conflicts that can result in connectivity issues and performance degradation.


• Simple, straightforward user interface
• Configurable status icon display options
• Accurate dBm to percentage (%) conversion
• Real-time graphs for signal strength and noise level, Signal-to-Noise Ratio (SNR), transmit rate, or MCS index (if supported)
• Signal quality ratings based on SNR measurements
• Automatic channel recommendations*
• Comprehensive app's help describes how to use the tool the most effective way

Requires a Mac with built-in Wi-Fi. External Wi-Fi adapters are not supported.

For a more comprehensive analysis of the Wi-Fi environment consider WiFi Explorer, also available in the Mac App Store.

* Due to limitations of the Wi-Fi scanning framework, channel recommendations are based solely on the detection of other Wi-Fi signals, and do not consider external sources of interference or hidden networks (i.e. networks that do not broadcast their SSIDs).

What's New in Version 3.3.2

• Fixes incorrect channel number in popup window.

What's new in version 3.3.1:

• Fixes to popup window for Retina displays.
• Added option to enable/disable verbose status.
• Other minor fixes.
• Updated vendors database.

If you find WiFi Signal useful and have a couple of minutes, please share your thoughts by leaving a review in the Mac App Store. It will make a huge difference to me!

Found a problem or have a concern? Please visit the WiFi Signal Support website and send me a message so we can resolve it.


Screenshot 1

Customer Reviews

Nice WIFI signal monitoring utility.

I have been using WIFI Explorer for quite sometime, and just discovered WIFI Signal. Nice simple interface, easy to understand, is greate for a quick check of your WIFI singnal conditions. This utility provides a lot of information in a simple, easy to understand window. Now, if we just had the same utility available for use with iOS devices. Well worth the modest cost. It should be installed on all WIFI enabled Macs and iOS devices…I hope a iOS version is in the works…


Great Wifi App for network admins

This app has been very useful for a quick look at wifi signal strength.

It was really helpful!

The app was really helpful, I was able to move my Wifi router and locate it in a better spot in my home.

WiFi Signal
View in Mac App Store
  • $0.99
  • Category: Utilities
  • Updated:
  • Version: 3.3.2
  • Size: 1.3 MB
  • Languages: English, Spanish
  • Seller:

Compatibility: OS X 10.7 or later, 64-bit processor

Customer Ratings

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