User blog comment:SEOkitten/Intro to SEO/@comment-26335203-20150811214147/@comment-26321732-20150812163250

The redirect pages created on Wikia are thin on content, but they also have HTML links and anchor text to help move search bots to the correct place. Much better for SEO than duplicate article pages.

Communties that do a lot of redirects can help the spiders out by monitoring Special:LonelyPages and Special:DoubleRedirects. Check out Special:Insights/deadendpages too!

I'm not clear on what you mean by the app. Let me know if I missed something.