Key Takeaways AppLovin posts 77% revenue and 156% net income growth in Q2 2025.Duolingo leverages AI to expand content rapidly, boosting margins and growth.Analysts see APP's integrated model and global reach as more compelling than DUOL.In the fast-evolving mobile technology space, AppLovin (APP) and Duolingo (DUOL) stand out as growth-oriented players capturing investor attention. APP leverages its powerful marketing and monetization platform to help mobile developers acquire users and drive in-app revenu ...