Based on the user reviews, here are three pros and cons for the HeliosStars app: **Pros:** 1. **Engaging gameplay**: Users praise the app's addictive and fun gameplay, with many reporting hours spent playing. 2. **Rewarding experience**: Reviewers appreciate the sense of accomplishment and rewards provided by the app. 3. **Regular updates**: Users appreciate the frequent updates and new content added to the app. **Cons:** 1. **Freemium issues**: Some users feel frustrated with the app's freemium model, citing limitations and nagging ads. 2. **Lack of progression**: A few reviewers feel that the app's progression is slow, making it difficult to access new content. 3. **In-app purchases unclear**: Users are sometimes confused about the purpose and pricing of in-app purchases. Please note that the output is based on my analysis of the user reviews on Google Play Store, and the pros and cons may not represent the opinions of all users.