Based on the users' reviews, here are three cons and pros of the FourColor2 app with 15 words or less for each: **Cons:** 1. "Lack of tutorials makes it difficult for new users to understand the puzzle mechanism." 2. "Too many ads and in-app purchases can be frustrating and interrupt gameplay." 3. "Some levels are too easy or too hard, leading to boredom or frustration." **Pros:** 1. "The world map edition is incredibly challenging and engaging, keeping players entertained for hours." 2. "The puzzle's unique mechanic and FourColor Theorem concept is fascinating and educational." 3. "The app is well-designed, with a clean interface and easy navigation, making it enjoyable to play." Please note that the cons and pros are based on a general summary of the reviews and may not reflect the opinions of every user.