Thanks to our integration with Google AdWords, each phone call generated by your call extension or click-to-call ads will be mapped back to the keyword, ad group, and campaign that led to the call. There's no need for hundreds of numbers or a number for every keyword. This information allows you to immediately start to optimize your click-to-call and call extension ads around those are performing best, helping you get the most out of your budget. CallTrackingMetrics call tracking for click-to-call ads will track both your mobile and desktop leads. Read the full comparison between using Google's click-to-call tracking numbers and CallTrackingMetrics click-to-call tracking numbers.