The Keysearch Keyword Difficulty Checker sends Google data to our servers in order to return the difficulty metrics for the searched keyword. We do not save any keyword data that the add-on sends to our server, nor any other personal information.
When a keyword is searched and the competition is checked using the addon, the data found in the Google results is sent to our server. Our server then processes the data to obtain the link metrics and then returns the data back to the addon. No data is processed unless the "Check Competition Now!" button is clicked. You can avoid having any data sent to our servers by not pressing the "Check Competition Now!" button.