You could have downloaded AppEditorDs 8.1.5 for Mac from our application library for free. This Mac application is a product of atalantia.
From the developer:
ScriptAppEditor is a simple-to-use application that allows you to edit the PLIST file of AppleScript applications. In addition it can move a PNG or ICNS file to appear as the native application icon. This program is simple to use, drag and drop your files into app icon.