Grro is a powerful AI-driven tool tailored to aid podcasters in expanding their listener base through strategic cross-promotions. Leveraging Echo's Audience Graph, it provides podcasters with insightful data on how well their podcast is performing in their chosen topics and in comparison to their peers. By analyzing audience habits and preferences, Grro offers personalized cross-promotion suggestions, helping podcasters connect with listeners who share their interests. Podcasters can easily explore and refine these recommendations to suit their specific content. Notably, Grro offers these cross-promotion recommendations at no cost, enabling podcasters to boost their audience instantly. While the tool hints at upcoming enhancements, it doesn't disclose pricing details. In essence, Grro equips podcasters with data-driven insights and actionable advice to grow their podcasts and reach new listeners effectively.