KeywordSearch offers users features such as the AI Audience Builder, Google Ads one-click sync, Keyword Topic Auto Expansion, and YouTube Ad Spy to optimize ads using artificial intelligence. The AI Audience Builder helps create suitable ad audiences, the one-click Google Ads sync simplifies audience integration into Google Ads, and the Keyword Topic Auto Expansion aids in content and channel growth. Additionally, the YouTube Ad Spy offers access to a database of YouTube ads for campaign optimization insights. With pricing tiers starting at $50 a month, KeywordSearch offers an efficient solution to supercharge ad audiences.