Download · macOS & Windows

The latest signed build, straight from the update channel.

These are the exact packages installed apps auto-update from on every launch. Both are minisign-signed; the app verifies the same signature before every update.

macOS

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Download for macOS

Open the download (it unpacks to QuantumCat.app).
Drag QuantumCat.app into Applications (replace if asked).
Open it from Applications — updates install silently from then on.

Windows · x64

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Download for Windows

Run the installer (SmartScreen: “More info” → “Run anyway”).
It replaces any existing install — settings and logins are kept.
Launch QuantumCat — updates install silently from then on.

Couldn’t reach the release manifest just now — retry in a minute, or grab the package directly from updates/latest.json.

If an installed copy ever shows “update failed”, open Settings → About & Updates → Repair & update — the app downloads this exact build and reinstalls itself. New here? Request early access first so your account is active, then follow the setup guide to connect your broker.