4D FLY is a free Android photography app developed by Hi-Tech Optoelectronics Co. Ltd. It is a versatile app that offers various functions such as taking photos and videos, browsing pictures and playing record files in the album, and controlling a toy via WIFI.

The app's interface is user-friendly, and it provides a menu to guide users on how to operate the software. With 4D FLY, users can take photos and videos using their mobile phones and browse their media files in one place. Additionally, the app allows users to control a toy via WIFI, adding a fun and interactive element to the app.

Overall, 4D FLY is a great choice for users looking for a multifunctional photography app that is easy to use and offers a variety of features.