This won't take long.
Unless you email us, then we get your email address and whatever you type in the email. But that's on you really.
We use Mozilla's WebThings Gateway as the basis for the Candle Controller. It's basically a standard installation of the WebThings Gateway with some of our add-ons (Candle Manager, MySensors, optionally Voco) on top to enable our features.
We do not collect any data from the add-ons.
But you should realise that Candle uses infrastructure to host code and files, and the owners of those platforms could theoretically track you. You'll have to look at the privacy policies of these organisations: