The JBL Connect app works with JBL Flip 5 Flip 4 Flip 3 Charge 4 Charge 3 Pulse 3 Pulse 2 Xtreme 2 Xtreme and Boombox. Use the JBL Connect app for speaker configuration and software upgrade. iPhone 5 or newer is required for compatibility with JBL Pulse 3 and Pulse 2.