Privacy
Short version: Selkie Hum doesn't collect anything, send anything anywhere or keep anything. I make the plugin on my own and don't run a service behind it.
What the plugin does with your microphone
Hum is an AUv3 plugin. It doesn't open the microphone itself; the Host you load it in (Loopy Pro, AUM, and so on) does, and hands the audio to Hum on the channel you put it on. Hum listens to that audio to work out which note you're singing, sends the note out as MIDI, and passes the audio on if you've set Voice Through above zero. It never records or stores audio. Once a buffer has been looked at, it's gone.
The small app that comes with the plugin, the one you see if you open Selkie Hum from your home screen, asks for the microphone directly, because it lets you use Hum without a Host. It works the same way: it listens, sends the Note as MIDI to whatever you point it at and keeps nothing. It makes no sound of its own.
Network
None. Neither the plugin nor the app makes any network request, ever. There's no account, no sign-in, no analytics, no crash reporting, no update check. If it ever needs a network for something, this page will say so first.
What's stored
Your settings (Gate, Smoothing, Scale and the rest) are saved by your Host as part of its project or preset, the way it saves every other plugin's. The view settings under the gear (appearance, sharps or flats, middle C) and the app's MIDI source ID live in the app's own defaults on your device, and nowhere else.
Tracking and third parties
There's no tracking and no third-party code that talks to anyone. The App Store privacy label for Hum says "Data Not Collected", and that's accurate.
Children
Nothing about Hum is aimed at children in particular, and since it collects nothing, it collects nothing from them either.
Changes
If any of this changes, the date at the top changes and the change is described here.
Questions
Email me at hello@dykewerk.app.