I just created my first ever Windows setup.exe using Inno Setup.  My limited testing here indicates it works as expected, both for installing and uninstalling.

I was  only able to get it to work by only installing as the local user, not 'For Everyone'.  I think it's a permissions problem, but I have neither the inclination to worry about it, nor the interest to chase it down.  I don't think this app deserves 'For Everyone' status, so this isn't a problem from my perspective.

Other than that, it seems to work great!  ShoppingList is available on Github here.