BPM is a free iPhone application developed by Motokazu Sekine. It falls under the category of Multimedia, specifically Music & Radio. This application allows users to display the tempo by tapping a button.

With the "Average mode" turned on, BPM calculates and displays the mean value of the tempo based on the taps. When the mode is turned off, BPM displays the tempo of each individual tap. This feature gives users the flexibility to choose the level of detail they want in their tempo display.

One useful feature of BPM is that if no tap is done for 3 seconds or more, the tempo is automatically reset by the next tap. This ensures accurate and consistent tempo tracking.

Additionally, users have the option to copy the tune information and BPM as a text by simply pressing the "Action" button. This makes it convenient to share the tempo information with others or use it in other applications.

Overall, BPM is a straightforward and user-friendly tempo display application that provides accurate tempo tracking and easy sharing of tune information. Whether you are a musician, dancer, or simply someone who wants to keep track of tempo, BPM is a handy tool to have on your iPhone.