Based on the users' reviews of the UTalk Serbian app, here are three cons and pros in English, within the 15-word limit: **Cons:** 1. Many users reported annoying ads and slow loading issues, disrupting the learning flow. 2. Some users found the app's grammar and pronunciation exercises too simplistic and unchallenging. 3. A few users complained about limited vocabulary and phrases, particularly for advanced learners. **Pros:** 1. Users praised the app's clear and concise lessons, making it easy to learn Serbian phrases. 2. Many appreciated the app's interactive flashcards and fun games, enhancing engagement and retention. 3. Some users enjoyed the app's pronunciation practice, reporting improved accent and intonation skills. Please note that these are general summaries based on a sample of user reviews, and individual experiences may vary.