Charlie Castell is the CEO and co-founder of PubRev+, a publisher, monetization partner and direct advertiser. Their first app, Rebuild Ukraine, built in Cherkasy, Ukraine, raises money for World Kitchen and Save the Children, by gamifying charitable giving. In 2019 he co-founded Face The Music to bring people into activism through music, and in 2020 he started Optimize The World, with his wife, to use the power of digital advertising and content to shape culture, for which they recently won a Webby. He has consulted for the Adam Schiff campaign, been shortlisted for a student academy award, and previously led the ads business at Warner Bros TV, Scopely and TextNow. He is co-lead of the Publisher Coalition, to create better standards and improve the in-app industry for everyone.