I barely market them except for a lot of ASO lessons, keywords, iterations on the icons and screenshots. Got a few good media mentions but nothing I chased down

I barely market them except for a lot of ASO lessons, keywords, iterations on the icons and screenshots. Got a few good media mentions but nothing I chased down. All the app review blogs, forum posts, tweets, Facebook, Pinterest, Reddit, etc. that I've spent so much time on? When I look at my PHG affiliate sales stats now, I can see that they're a tiny fraction of sales. The best marketing I do is cross-app links. So each app has a "more apps" list. I get 80-140% conversion when people visit the app store from those links. (140% because they purchase more than one app in the affiliate window time.) I also have a free version of one app that's useful on it's own but then steers people to purchase other apps with some in-house ads. (I don't run ads for any other apps except mine.)