Based on the users' reviews on the Google Play Store, here are the cons and pros of the Ko_zh app: **Cons:** 1. Poor user interface with cluttered design and too many ads (users are frustrated with cluttered and slow design). 2. Limited language options and errors in translated content (users struggle with limited language options and translation errors). 3. Lack of customer support and unresponsive developers (users feel ignored with no response to their issues and concerns). **Pros:** 1. Comprehensive dictionary with vast vocabulary and useful phrases (users appreciate the app's extensive dictionary and phrasebook). 2. Offline access and simple search function (users like the app's offline capability and easy search features). 3. Regular updates with new words and improved accuracy (users value the app's continuous improvements and additions). Please note that opinions may vary, and these are just condensed summaries based on the users' reviews.