Based on the user reviews of the Mahjong app, here are three cons and three pros, each limited to 15 words: Cons: 1. "Too many ads, disrupts gameplay and gets frustrating after a while." (Source: 3 out of 5 stars) 2. "Some tile layouts are impossible to solve, not challenging just frustrating." (Source: 3 out of 5 stars) 3. "Limited options for customization, such as tile styles and game modes." (Source: 4 out of 5 stars) Pros: 1. "Engaging multiplayer option, can play with friends and family in real-time." (Source: 5 out of 5 stars) 2. "Variety of game modes and levels, including themes like Halloween and Christmas." (Source: 4 out of 5 stars) 3. "Daily challenges and tournaments keep the game exciting and competitive." (Source: 5 out of 5 stars) Please note that the opinions expressed are based on a limited sample of user reviews and may not represent the views of all users.