Duolingo(US:DUOL) 3 6 Ke·2025-09-23 00:07Core Insights - The report by Sensor Tower indicates that mobile AI product IAP revenue is expected to grow by 100% in the first half of 2025, with all top 10 global IAP revenue products being ChatBots, highlighting a lack of diversity in profitable AI-native products on mobile platforms compared to web platforms [1][3] - Beyond ChatBots, various categories have leveraged AI to significantly enhance revenue, with many entrepreneurs entering different sectors with AI products [3] Nutrition and Diet - The nutrition and diet category has seen a surge in AI-related products, with an increase of 174 products incorporating AI-related terms between the two reporting periods [3] - The top 5 AI-integrated products in this category have all achieved full AI integration, with the leading product, Cal.ai, generating nearly $3 million in monthly revenue as of August 2025 [4][5] - Cal.ai's DAU increased from 57,000 to 378,000, marking a growth of 5.6 times, while older products like YAZIO experienced a decline in DAU [5][6] Religion and Spirituality - The religion and spirituality category saw an increase of 81 products incorporating AI-related terms, with Bible Chat emerging as a significant player, achieving a DAU of 132,000 and monthly revenue of $951,000 by August 2025 [13][15] - Bible Chat's interactive AI dialogue feature enhances user engagement, allowing users to ask questions about texts and personal issues, which has contributed to its growth [18][20] Language Learning - The language learning sector has added 65 AI-related products, with AI-driven speaking practice becoming a standard feature across many applications [21] - Duolingo remains the leading product, with a DAU of 19.43 million, while Babbel's DAU has stagnated, indicating a competitive landscape where differentiation in course design is crucial [22][28] - Speak has introduced new courses and a review feature, contributing to its growth in the U.S. market, while other AI products like Learna and Praktika focus on immersive experiences to differentiate themselves [23][26]