Hi, i also did a app for the Remote3 to control the Hue Sync Box.
I used ChatGPT and a existing community version of Homeassistent.
The App works standalone and dont need a HA or something,
GitHub: daCream87/uc-hue-sync-box
You should also post this on Discord in community-projects and submit it to UC https://support.unfoldedcircle.com/hc/en-us/requests/new?ticket_form_id=14140507182108