I really like the ONE route, but...

The Seoul green line (#2) is a good route, but I need add-ons. I went to the site to add on the Add-ons, but the converter is only good for Microsoft based PC. I only have a Mac, and the converter doesn’t work.
Can you create a converter for the Mac, or better yet, add the new routes directly to the app with in-app purchases. I’d spend .99 cents to get another route; like the Seoul blue line (#1) for example.

U12monkeys about Hmmsim - Train Simulator, v1.1.1