I have been using Vitamin Tools for working with client campaigns for a long time. Previously, I had to constantly switch between different accounts and tabs, but now everything is conveniently gathered in one place, allowing me to manage advertising quickly without any hassle. Additionally, the return here is also good. I usually spend about 200,000 rubles on advertising per month, and I get back around 10,000 rubles net. Sometimes I reinvest it in advertising, but more often I just withdraw it to my card, which creates a nice bonus for using the service. In the end, it really is profitable.