Subflow is a free lifestyle application designed for iPhone users, offering vibrant visualizations that enhance the music experience in various settings, such as stages or living rooms. The app features intuitive controls, allowing users to tap the left or right edges of the screen to switch between different visualization modes. Vertical swipes adjust the speed of the visuals, while tapping the upper half establishes a beat pattern and tapping the lower half can cancel or add beats.

In addition to its basic functionalities, Subflow supports advanced features like sending complex command sequences over UDP and controlling visuals through OS2L, making it compatible with most DJ software. Users can also fine-tune beat alignment with horizontal swipes and change color through long presses, providing a rich and customizable visual output that syncs seamlessly with their music.