Adspert is based on profit maximization however, Google Smart Bidding doesn't take into account the value of each conversion. Therefore some conversion with smart Bidding can be unprofitable and have a higher cost than the value of the conversion. This is not the case with Adspert.
Adspert is independent of any advertising platform. We work in the best interest of our customer. In addition, you keep control of your advertising. At any time, you are free to change the bids and increase or decrease spending. This is something that you can not do with Google Smart Bidding.