piDisplay

Control your official Raspberry Pi Foundation 7" touchscreen display backlight and brightness from any iOS device. Toggle power and activity LEDs if you want.

Shell command utility to run commands on your pi from iOS.

Optional SwiftServer (Swift on Linux) for blazing fast response - you can still use SSH if you want though.

The server-side software (on the raspberry pi) has only been tested on Raspbian Stretch and pi 3B+

The installer for the pi server software will install Swift on your pi then build and install the server for you but you can modify and/or run it manually.

The Apple Watch app will still work when the iPhone app is not in the foreground but only ssh communication works in background mode.