Introducing Stellarium Mobile - Star Map, a comprehensive application designed for stargazing enthusiasts and astronomy lovers. This mobile app offers a range of functions and features that allow users to explore the mesmerizing universe right from their smartphones.

1. Functions and Features: Stellarium Mobile provides users with an impressive set of tools to assist in observing and understanding celestial phenomena. Users can easily navigate the night sky, identify stars, constellations, and planets, and even track satellites. The app also offers detailed information about astronomical events, such as meteor showers and eclipses, ensuring users never miss out on key celestial moments.

2. Most Attractive Feature: With a myriad of captivating features, one that stands out as particularly attractive to users is the real-time sky rendering. Stellarium Mobile utilizes accurate graphics and a powerful celestial simulation engine to display an incredibly realistic representation of the sky at any given time and location. Users can view the night sky as if they were observing it with their own eyes, making it an alluring feature that immerses them in the beauty of the cosmos.

3. Global Userbase: Stellarium Mobile boasts a significant and growing userbase, with countless individuals around the world indulging in their passion for stargazing through this application. The app has garnered a loyal following and continues to attract new users who find joy in exploring the wonders of the universe.

4. Common Issues: While Stellarium Mobile offers an exceptional stargazing experience, a few common issues have been encountered by users. Some users have reported occasional inaccuracies in the positioning of celestial objects, which can result in confusion during observation. Additionally, a few users have experienced technical glitches or occasional crashes. However, the development team is dedicated to addressing these concerns and providing regular updates to improve the user experience.

5. Advantages and Disadvantages: One of the greatest advantages of Stellarium Mobile is its user-friendly interface, making it accessible to both seasoned astronomers and beginners. The app's vast database combined with its accurate sky rendering creates a highly engaging and educational experience. However, a potential downside of Stellarium Mobile is its reliance on an internet connection for certain features, which may limit usability in remote or offline locations. Additionally, the app's advanced features may require a subscription or in-app purchases.

In conclusion, Stellarium Mobile - Star Map offers a wealth of functions and features, attracting a global userbase of stargazing enthusiasts. While a few issues have been reported, the advantages of this app, such as its realistic sky rendering and comprehensive celestial information, far outweigh any disadvantages. With Stellarium Mobile, users can embark on an astronomical journey, discover the mysteries of the universe, and ignite their passion for stargazing.