Why does my Mac complain? DeskCat isn't signed by a paid Apple developer account, so macOS says it "can't verify" the app. It's safe to open; you only need to do this once:
- Try to open DeskCat, then click Done on the warning.
- Open System Settings → Privacy & Security.
- Scroll down to "DeskCat was blocked…" and click Open Anyway.
Or, in Terminal:
xattr -dr com.apple.quarantine /Applications/DeskCat.app
Once it's running, click the cat in your menu bar to rename it, pick a toy, or quit.