Based on the user reviews, here are three pros and three cons of the "Fast Speak Bengali" app: Pros: 1. Useful for language learners: Users praise the app for helping them improve their Bengali speaking skills quickly and effectively. 2. Engaging exercises: The app's speaking exercises are engaging and fun, making language learning a enjoyable experience for users. 3. Good pronunciation guide: The app provides good guidance on pronunciation, helping users improve their Bengali accent. Cons: 1. Limited vocabulary: Some users feel that the app's vocabulary is limited and does not cover advanced topics. 2. Technical issues: A few users have reported technical issues, such as app crashes and poor sound quality. 3. No customization option: Users wish the app had a customization option to choose specific topics, accents, or levels of difficulty.