I’d always been amused by the idea of ​​”spying” on other advertisers, until one day I saw a newbie outperform me in CTR simply by carefully studying other advertisers’ campaigns. This struck a chord with me, and I decided to make up for lost time. I stumbled across a review where you can view details about the best spy tools and realized it wasn’t a gimmick, but a legitimate part of the market. Now, starting tests without analyzing competitors is like going on a hike without a flashlight.