I have published the KiFinder source on GitHub under GPLv3, following the source-only decision from July.
I still do not offer a prebuilt app. To try it, you build it yourself with Xcode 26 and XcodeGen on an Apple silicon Mac. The face-model weights require a separate one-time download, and everything after that runs on the Mac. The README covers setup, the model, and how to sign it with your own team.