What's a better model for this? A single app with a one-time IAP; or two apps, where one is free with no ads or IAPs, but there's a link to a separate paid app with no IAPs?
It seems there's no way to distinguish easily when you're looking at the App Store whether IAP means a reasonable one time purchase for the full game, or a series of predatory IAPs. So having any IAP at all seems to turn off a lot of people. But I'm not sure two separate apps is the best approach either.