Seems like a best kept secret: mobileraker app for IOS and Android

Mobileraker works as a simple UI for Klipper on the phone. Connect it to an existing moonraker installation and control the printer.

:toolbox: With Mobileraker, the user has access to critical machine commands:

Pause, Resume, Stop a print job
Monitor the print progress
Control all axis of the machine
Control the heaters
Get the current temperature readings
Control fans
Control pins like LEDs
Send GCode Macros
Emergency Stop the machine