Based on the users' reviews of the Bubble Balls app, here are three cons and pros: **Cons:** 1. "Disappointing physics engine with unrealistic ball movements and bounces." 2. "Lack of customization options for balls, colors, and game modes is a letdown." 3. "Too many ads and in-app purchases can be frustrating and distracting." **Pros:** 1. "Havoc-causing fun with addictive gameplay and satisfying ball collisions." 2. "Simple yet challenging gameplay appeals to both kids and adults." 3. "Colorful graphics and cute animations make the game visually appealing."