How can I set a version number for an AppleScript application?

You would have to take the non-trivial step of moving to XCode and ApplescriptObjC.

No you don't.

Ctrl-click the app in the Finder and select 'Show Package Contents' and navigate to Contents/Info.plist

This is a .plist file that contains data about your application. You can edit this with any application capable of editing .plists and add either a 'Bundle version' or a 'Bundle version string, short' key with the value you want.

Sure, XCode can add this resource automatically as you build your app, but it isn't a prerequesite.

it would probably also help to give it a unique bundle identifier. Launch services won't keep track of versions of a script app unless the app can be uniquely identified with respect to other apps.

P.s. It appears you need to open the script app in the AppleScript Editor after you've changed and saved the plist file and then re-save it in order for the version info to appear in the Get Info pane.

You learn something every day! Thanks for the correction, Camelot.

Posting to this old post, but I am trying above method on my 10.8.2 machine and it doesn't seem to work.

I added the bundle version string as in the attached image.

Recompile my app, saved it but still version info doesn't show up in finder.

Also, tried to change "Bundle version" to "CFBundle version". But still didn't work.

Any suggestions?

There are two keys to note here:

• Bundle Version (CFBundleVersion): the full version number (often used by developers to identify individual builds)
• Bundle Versions String, Short (CFBundleShortVersionString): the string representation of CFBundleVersion that appears in the Get Info dialog.

It's easy to get them confused.

Thanks. That helped. It works now. 🙂