I have just built a small remote for iPhone 6 and up, to use while focusing on stage. It's just a simple channel commands, but it's very handy when you want to turn lights on/off for focusing! Hope you like it!
Feel free to send me your comments.
It's on ETC GitHub: https://github.com/ElectronicTheatreControlsLabs/OSCLayouts/tree/master/User-Submitted