Based on the users' reviews of the "Balls" app, here are three cons and pros in English, limited to 15 words each: **Cons:** 1. "Glitches and errors frequently occur, making the app frustrating to use." 2. "Advertising is overwhelming and intrusive, disrupting the gameplay experience." 3. "Limited features and options, leading to a lack of engagement and interest." **Pros:** 1. "Simple and intuitive design makes the app easy to navigate and play." 2. "Colorful graphics and animations add a fun and lively atmosphere." 3. "Regular updates with new content and challenges keep the game exciting." Note: The reviews are subject to change, and this conclusion is based on the current reviews at the time of my knowledge cutoff.