I would recommend code-signing the build before distributing.
Thanks for your feedback, we will look for some affordable code-signing certificates. Any suggestions? By the way, here is the issue link: https://github.com/ananas-analytics/ananas-desktop/issues/61
That's for Windows - for Mac you'll also need an Apple developer account, afaik they're the only people who can issue certs.
EDIT: Woah, I take that back. Digicert has now gone up from $74/year to $474/year, which is crazy. I now also need a new certificate provider...