Based on the users' reviews of the Chair.IO office chair battle app, here are three pros and cons: **Pros:** 1. Adrenaline rush: Users enjoy the thrill of racing against others in a virtual office chair competition. 2. Social interaction: Players appreciate the ability to interact with others, share strategies, and collaborate. 3. Time-killer: Users praise the app's engaging nature, providing a fun and entertaining break from work or daily routine. **Cons:** 1. Glitches and crashes: Some users experience frustrating glitches and crashes during gameplay. 2. Limited customization: Reviewers criticise the lack of customization options for chairs, tracks, and other game elements. 3. Monetization: Users express concerns about in-app purchases and the pressure to spend money to unlock new features.