I've got this video buried in a previous thread, but think the "Showcase" is a good spot for it.
In my published iOS app, Super iBot, I replaced my static .png hero with a Spine created hero.
It's most likely the first game in the App Store to integrate Spine.
Considering I had never made an animated character or used sprites, I was stoked at what Spine enabled me to do. The app was built with Corona SDK.
Here's a look at how it turned out.