From the downloads page [0], I presume he means he's distributed the applications as unsigned applications [1]. So "free developer certificates" in the same sense that self-signed SSL certificates are free.

[0] https://synappser.github.io/downloads/ [1] https://support.apple.com/en-gb/guide/mac-help/mh40616/mac

I'm also curious what this is. Apple wouldn't give free certificates even for open source apps! $99 to give their users free apps.

The free developer accounts don't get your apps into the iOS app store. That requires a paid up $99 developer account.

I think (but am not sure) that you can use them (for now) to sign a macOS app that you distribute from your own download somewhere, and Mac uses can download your apps and click through the "Yes, I trust apps signed with that Satoshi Nakamoto certificate" dialog and install them.

You don't get even free macOS notarization without paying $99. Really, could I get a link to where this mythical free account is and what it provides?