I love Line 6 and have the guitar port and sonic port. I love the tones and flexibility of the two platforms on IOS and a Mac OS. Unfortunately, Apple in its update to IOS 13 and OS Catalina have not supported the drivers for either platform. So this app will not work with your IPhone if you are running IOS 13. Also any amp modules you bought will be unavailable to use. Moreover, if you are using Line 6 monkey on Mac all of your amp packages are no longer compatible.