Based on the users' reviews of Climber.IO on the Apple App Store, here are three cons and pros: **Cons:** 1. Poor customer support: Many users reported difficulty in getting help from the developers. 2. Limited features: Some users found the app lacking in features and functionality. 3. Frequent errors and crashes: Multiple users experienced technical issues, which was frustrating. **Pros:** 1. User-friendly interface: Many users praised the app's clean and easy-to-use design. 2. Helpful community: Users appreciated the support and feedback from the community. 3. Good for learning: Climber.IO was useful for users looking to improve their climbing skills. Please note that the cons and pros are based on the general sentiment of the user reviews and may not be exhaustive or objectively accurate.