Based on the users' reviews on the Apple App Store, here are three cons and pros for the "Gun Blood: Zombies Building" app: **Pros:** 1. Engaging gameplay with intense action: Users praise the app's fast-paced and thrilling experience. 2. Impressive graphics and sound effects: Many reviewers appreciate the app's high-quality visuals and sound design. 3. Addictive building and upgrading mechanics: Users enjoy the challenge of building and upgrading their base to defend against zombies. **Cons:** 1. Frequent in-app purchases and ads: Some users express frustration with the app's aggressive monetization strategy. 2. Repetitive gameplay and lack of diversity: Reviewers mention that the gameplay can become repetitive and that the app lacks variety. 3. Technical issues and bugs: A few users report encountering technical problems, such as crashes and frozen screens, while using the app.