macOS will ask you to confirm a couple of things on first launch.
Here's exactly what to do.
Why does macOS block Aurora?
Aurora is a small app not yet distributed through the Mac App Store. macOS requires apps to be notarized or distributed via the App Store to open without this step. Apple charges €99/year for this, which is why we haven't changed the process yet. For now, the steps above are the standard way to install indie Mac software.
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