This app was mentioned in 4 comments, with an average of 2.00 upvotes
You could also pick up the game on Android/iOS for reasonably cheap. It's on Google Play for $3. https://play.google.com/store/apps/details?id=de.brettspielwelt.kingdombuilder&hl=en
I'm pretty sure Kingdom Builder is on sale, too. Currently priced at $2.99, and I think it's $4.99-$6.99 normally.