World's fastest ad-code; Serves custom ads in all formats; Custom API-driven solutions; Real-time reporting; White-label interface. Start Your Free Day Trial. Sep 6, - These are the best tools to spy on your competitors' ads so you can . to get a trial version for 1USD for 3 days, which you should use wisely. Note: if you wanna check adult ads, don't forget updating your preferences so as to allow adult ads! The Best Affiliate Marketing Tools of (Free and Paid).