What is the case study on True Caller?

In an episode of "My First Million", Sam Parr mentions that they are planning a case study on True Caller, particularly looking into its business aspects as part of a larger discussion on spam calls. This case study was intended to be a detailed exploration of True Caller as a significant business within the spam call industry, potentially reaching into the tens of millions of dollars. Sam Parr suggested signing up on Trends.co for an in-depth analysis that would be available in the following week 1.