Launch app when another app is closed

How do I have a specific app open when another app is closed automatically?

I am using Moneydance which quits when clicking the upper left red window button (unlike other apps that have to be quit). The other app is Safari.

Safari will never be running when Moneydance is running as I have it quit via an AppleScript when launching Moneydance, so it's "just" a matter of launching Safari when Moneydance is closed with its red close window button which quits the app.

Is the an AppleScript way to accomplish this?

Thanks