Probably not an app that everyone is going to rush to download, but if you do own a Yamaha M7CL console this could be very useful to you. Here’s the description:
StageMix is an application for the Apple iPad that provides remote control of Yamaha M7CL digital mixing console functions via a simple, intuitive graphical interface from anywhere within wireless range. The software has been specifically designed to allow engineers to adjust monitor mixes from the performers’ positions on stage, directly controlling mix parameters via the iPad rather than having to rely on verbal directions to a second engineer. The result is better mixes in less time: a huge advantage during high-pressure pre-show setup. StageMix does not provide remote control of all M7CL parameters, but is focused on the requirements for adjusting monitor mixes on stage.