Music Factory is a versatile multimedia application that allows you to modify your favorite songs' key, tempo, and vocal presence. Developed by KBIC International Limited, it is available for iPhone users as a full version.

This app is perfect for performers who struggle to find the right music for their key, need a slower or faster version of the music, or cannot find the music of a song with no vocals. It is also great for those who want to have a fun time listening to their favorite songs in a different tempo or key.

Using Music Factory is as easy as following two simple steps. First, select a song from your iTunes library. Second, after the song is processed, you can turn on/off vocals with the switch and modify the speed and the pitch of the song with the sliders. The app uses ZTX LE Time Stretch/Pitch Shift technology licensed from Zynaptiq GmbH, ensuring high-quality output.