The dev, @hariette, also has a Mastodon profile where she posts updates https://tech.lgbt/@hariette. There is also a link to the apps discord server in her bio.
I’ve got an old oscilloscope and a function generator that I’m trying to use to play around and get more familiar with this kinda stuff. I’m mostly new to electronics (especially analog ones) and I’m having a hard time getting them setup properly....