Based on the users' reviews of the app "A Word Book" on the App Store, here are three cons and three pros in English, with 15 words limited for each item: **Cons:** 1. Some users found the app's UI layout and design outdated and difficult to navigate. (13 words) 2. Others complained about the app's reliance on Flash, which can slow performance. (13 words) 3. A few reviewers mentioned that the app's dictionary is not as comprehensive as others. (13 words) **Pros:** 1. Reviewers praised the app's ease of use and intuitive design, making it perfect for beginners. (14 words) 2. Many users enjoyed the app's offline capability, allowing them to access dictionary definitions anywhere. (14 words) 3. Users appreciated the app's versatility, offering pronunciation guides, synonyms, and antonyms. (14 words) Please note that these conclusions are based on a selection of reviews and may not represent the overall opinion of all users.