SJ GPS PRO is a utility application developed by Guangdong Shiji Technology Co.Ltd. for iPhone users. This free application allows users to control a toy quadrocopter using wifi, with the added feature of real-time video transfer.

With SJ GPS PRO, users can have an immersive experience controlling their toy quadrocopter. The app provides a user-friendly interface that allows for easy navigation and control. By connecting to the quadrocopter via wifi, users can fly it around and perform various maneuvers. The real-time video transfer feature adds an extra layer of excitement, as users can see the live video feed from the quadrocopter's camera on their iPhone screen.

Overall, SJ GPS PRO offers a fun and engaging experience for toy quadrocopter enthusiasts. The app's intuitive controls and real-time video transfer make it easy to enjoy flying the quadrocopter and capturing unique aerial views.